Metropolitan Transportation Plan
Executive Summary

Appendices

Appendix A

Transportation Capacity Improvements Assumed
in MTP Network and Air Quality Analysis

Between 1996 and 2017 Clark County jurisdictions have planned for transportation improvements in locations with existing or forecast future capacity problems. These anticipated improvements were taken into consideration in carrying out the Metropolitan Transportation Plan needs and air quality analysis.

The MTP transportation system is the existing transportation network with improvements made on those links where projects are programmed in the Transportation Improvement Program. In addition, improvement projects are included where regional need has been identified in the MTP development process for which there is strong regional commitment. Projects included in the MTP transportation system may eventually be programmed for funding by federal, state, Transportation Improvement Account (TIA) and/or local sources.

Assignment of forecast future year trips onto the MTP transportation network in the regional travel forecasting model reveals where there are likely to be deficiencies in the transportation system over the longer term. Locations where future traffic volumes exceed MTP system capacity require an analysis of remedial measures to solve these anticipated deficiencies and an analysis of financial feasibility.

The following list is of the major transportation improvements which have been incorporated into the MTP transportation network for Clark County. These listed projects were identified in the Metropolitan Transportation Plan needs analysis and included in the air quality conformity analysis as required by the federal Clean Air Act Amendments and Washington Clean Air Act. The 1997-1999 Transportation Improvement Program for Clark County is consistent with this list.

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Assumed improvements on MTP Transportation Network in Traffic Model
(Note: most facilities/projects listed are on the designated regional transportation system;
italicized facilities/projects are off-system)

State Highway System (also, see HCT Corridors)

Facility Cross Street Improvements Capacity Increase in 2017 MTP

I-5 SR-14 to I-5 Ramp Meter at Interchange Yes

I-5 Main St. Interchange Interchange reconstruction

I-5 Main St. to NE 78th St. Widen, 3 lanes each direction

I-5 NE 78th St. Interchange reconstruction (urban)

I-5 78th St. to Salmon Creek Widen, 3 lanes each direction

I-5 Salmon Creek to I-205 Widen, 3 lanes each direction (this project completed in Fall 1996, but 3rd lane will not open until I-5 widening is complete)

I-5 at SR-500 Add access (westbound SR-500 to northbound I-5) and add lane Yes

I-5 at NE 179th St. interchange Signal and ramp work Yes

I-5/Hwy 99 Corridor Intelligent Transportation Corridor Yes

I-205 SR-14 Interchange to NE 9th St. Ramp extension and widening Yes

I-205 SR-500/Fourth Plain Interchange Interchange improvement; connection from Fourth Plain to southbound I-205

I-205 NE 18th St./Burton Rd. Addition of Split Diamond interchange with I-205 auxiliary lanes and frontage roads Yes

SR-14 SE 164th Ave. Interchange improvement (compeletion in early 1997)

SR-14 Brady Rd./SE 192nd Ave. Interchange addition

SR-14 NW 6th Ave. (Camas) to 32nd St. (Washougal) Widen, 2 lanes each direction and add interchanges (15th, 27th, 32nd) Yes

SR-14 at SR-500, Camas Construct interchange

SR-500 at St. John’s Blvd. Construct interchange

SR-500 at 42nd Ave. Grade separation

SR-500 at 54th Ave. Grade separation

SR-500 at Thurston Way Construct interchange

SR-500 at NE 112th Ave. Construct interchange

SR-500 at SR-503 Construct interchange

SR-500 Ward Rd. to NE 162nd Ave. Widen, 2 lanes each direction

SR-500 NE 232nd Ave. vicinity Realign (to correct bend in road) Yes

SR-501 I-5 interchange to NW 31st Ave. Add center left turn lane at intersections Yes

SR-502 at NE 10th Ave./219th St. (Duluth) Construct southbound left turn lane and northbound right turn lane Yes

SR-502 Dollars Corner to Battle Ground Widen, 2 lanes each direction with center left turn lane

SR-503 Lewisville Park vicinity Construct climbing lanes

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Other Arterial and Collector System (italicized facilities/projects are off-system)

Facility Cross Street Improvements Capacity Increase in 2017 MTP

SE 7th St. Chkalov to SE 136th Av. Widen to include center left turn lanes Yes

SE 10th St. Ellsworth to I-205 Widen, 2 lanes each direction

Mill Plain Mill Plain Extension Extension westward on new alignment from City of Vancouver to access Port of Vancouver. 2 lanes each direction with center left turn lane.

Mill Plain I-205 to Chkalov Widen to add 1 eastbound lane Yes

Mill Plain Chkalov to SE 164th Ave. Add HOV lane Yes

Mill Plain Extension east from SE 172nd Ave. to SE 1st St. Construct on new alignment. 2 lanes each direction with center left turn lanes.

NE 18th St. NE 105th Ave. to NE 86th Ave. Construct on new alignment. 1 lane each direction with center left turn lanes.

NE 18th St. NE 105th Ave. to NE 86th Ave. Widen to 5 lanes, 2 lanes each direction with center left turn lane and intersection improvements Yes

Burton Rd. Andresen to 86th Ave. Widen to 5 lanes, 2 lanes each direction with center left turn lane Yes

Burton Rd. 86th to NE 142nd Ave. Widen to include center left turn lane and intersection improvements

Burton Rd. NE 142nd Ave. to NE 162nd Ave. Widen to include center left turn lane

NE 49th St. NE 112th Ave. to 122nd Ave. Widen, 2 lanes each direction and intersection improvements

NE 49th St. NE 122nd Ave. to 137th Ave. Widen, retain 1 lane each direction, add turn lanes

Fourth Plain Railroad bridge to Mill Plain Extension Construct center left turn lane to make 5-lean total width Yes

Fourth Plain Hazelwood to Falk Widen to include center left turn lane

Fourth Plain NE 62nd to NE 65th Ave. Widen, 2 lanes each direction with center left turn lane

Fourth Plain NE 65th/66th Ave. Intersection realignment Yes

Fourth Plain NE 102nd to SR-503 Widen, 2 lanes each direction with center left turn lane

NE 78th St. Lakeshore to Hazel Dell Ave. Widen, 2 lanes each direction

NE 78th St. NE 25th Ave. to St. John’s Widen, 2 lanes each direction

Covington Rd. Fourth Plain to NE 102nd Ave. Widen, 2 lanes each direction Yes

Padden Parkway NE 53rd Ave. (at 78th St./Padden) to NE 83rd St. extending to Andresen Rd. Construction on new alignment
2 lanes each direction

Padden Parkway 94th Ave. to SR-503 Construction on new alignment
2 lanes each direction

Padden Parkway SR-503 to Ward Rd. Construction on new alignment
1 lane each direction

Ward Rd. S. of Davis to NE 119th St. Realign and install turn lanes Yes

NE 99th St. NW 21st Ave. to Lakeshore Widen to construct center left turn lane Yes

NE 99th St. NE 50th Ave. to St. John’s Construct on new alignment, 1 lane each direction

NE 117/119th St. Hwy. 99 to 26th Ave. Realign 119th St (east of Hwy 99) with 117th St. (west of Hwy. 99)

NE 119th St. NW 7th Ave. to Hazel Dell Ave. Construct new collector road segment Yes

NE 134th St. Rockwell Dr. to WSU entrance Widen, 2 lanes each direction Yes

NE 179th St. NE 2nd Ave. to NE 29th Ave. Widen, 2 lanes each direction Yes

NE 199th St. SR-503 to Parkway, Battle Ground Widen to include center left turn lane Yes

Fruit Valley Rd. 34th St. to 39th St. Widen to include center left turn lane

Main St. 5th St. to Mill Plain Convert to 2-way traffic Yes

NE 20th/15th Ave. NE 134th St. to NE 179th St. Widen to include center left turn lane

NE 29th Ave. NE 134th St. to NE 179th St. Widen to include center left turn lane Yes

St. John’s NE 50th Ave. to I-205 Widen, 2 lanes each direction Yes

St. John’s I-205 to NE 72nd Ave. Widen, 2 lanes each direction Yes

NE 72nd Ave. NE 179th St. to NE 219th St. Widen to include center left turn lane Yes

NE 87th Ave. Mill Plain to Fourth Plain Extension on new alignment
1 lane each direction

Ellsworth SE 10th St. to SR-14 Widen, 2 lanes each direction

NE 138th Ave. NE 18th to NE 28th St. Widen, 2 lanes each direction with sidewalks and bike lanes

NE 138th Ave. NE 28th St. to NE 39th St. Widen, 1 lane each dirction with sidewalks and bike lanes

NE 137th Ave. NE 76th to NE 99th St. New segment, 1 lane each direction with center left turn lane and shoulders

SE 164th Ave. SE 34th St. to SE 1st St. Widen, 2 lanes each direction plus HOV lane Yes

SE 164th Ave. at Mill Plain Blvd. Add southbound right turn lane Yes

SE 162nd Ave. SE 1st St. to NE 39th St. Widen, 2 lanes each direction and center left turn lane Yes

SE 162nd Ave. NE 39th St. to Fourth Plain Widen, 2 lanes each direction and center left turn lane Yes

SE 192nd Ave. SR-14 to SE 15th St. Construct, 2 lanes each direction Yes

SE 192nd Ave. SE 15th St. to NW 18th St. Widen, 2 lanes each direction Yes

Sierra St. NW 33rd Ave. to NW 38th Ave. Widen, 1 lane each direction

Parker St. NW 38th Ave. to SE 1st St. Widen, 2 lanes each direction and center left turn lane

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Transit

Facility Improvements

Fixed-route system expansion Service hours (both expansion of route system and frequency of service on certain routes) [per C-TRAN’s Service and Financial Plan, C-TRAN, 1996.]
1996 Annual Service Hours: 239,864
2017 Annual Service Hours: 300,000+

Fisher’s Landing Park and Ride New facility

Central County Park and Ride New facility (415+/- spaces)

I-5 Corridor Park and Ride New facilities along I-5 corridor, including the vicinity of NE 88th St.

Seventh St. Transit Center Expansion of existing facility

C-TRAN Headquarters Expansion of headquarters facility

LRT Corridor (included in model)

Facility Cross Street Improvements

I-5 Interstate Bridge to VA Hospital vicinity Construct LRT in I-5 corridor
This segment is included in South/North Corridor Draft Environmental Impact Statement

HCT Corridors [included in designated regional transportation system] (also, see State Highway System)

Facility Cross Street Improvements

I-5 VA Hospital vicinity to NE 134th St. HOV/Busway corridor
(bus transit service included in model for this segment)

I-205 Glenn Jackson Bridge to NE 134th St. HOV/Busway corridor
(bus transit service included in model for this segment)

SR-500 I-5 to Orchards vicinity HOV corridor
(bus transit service included in model for this segment)

Assumed improvements on MTP Transportation Network in Traffic Model (Note: most facilities/projects listed are on the designated regional transportation system; italicized facilities/projects are off-system)
State Highway System (also, see HCT Corridors)
Facility	Cross Street	Improvements	Capacity Increase in 2017 MTP
I-5	SR-14 to I-5	Ramp Meter at Interchange	Yes
I-5	Main St. Interchange	Interchange reconstruction
I-5	Main St. to NE 78th St.	Widen, 3 lanes each direction
I-5	NE 78th St.	Interchange reconstruction (urban)
I-5	78th St. to Salmon Creek	Widen, 3 lanes each direction
I-5	Salmon Creek to I-205	Widen, 3 lanes each direction (this project completed in Fall 1996, but 3rd lane will not open until I-5 widening is complete)
I-5	at SR-500	Add access (westbound SR-500 to northbound I-5) and add lane	Yes
I-5	at NE 179th St. interchange	Signal and ramp work	Yes
I-5/Hwy 99 Corridor		Intelligent Transportation Corridor	Yes
I-205	SR-14 Interchange to NE 9th St.	Ramp extension and widening	Yes
I-205	SR-500/Fourth Plain Interchange	Interchange improvement; connection from Fourth Plain to southbound I-205
I-205	NE 18th St./Burton Rd.	Addition of Split Diamond interchange with I-205 auxiliary lanes and frontage roads	Yes
SR-14	SE 164th Ave.	Interchange improvement (compeletion in early 1997)
SR-14	Brady Rd./SE 192nd Ave.	Interchange addition
SR-14	NW 6th Ave. (Camas) to 32nd St. (Washougal)	Widen, 2 lanes each direction and add interchanges (15th, 27th, 32nd)	Yes
SR-14	at SR-500, Camas	Construct interchange
SR-500	at St. John’s Blvd.	Construct interchange
SR-500	at 42nd Ave.	Grade separation
SR-500	at 54th Ave.	Grade separation
SR-500	at Thurston Way	Construct interchange
SR-500	at NE 112th Ave.	Construct interchange
SR-500	at SR-503	Construct interchange
SR-500	Ward Rd. to NE 162nd Ave.	Widen, 2 lanes each direction
SR-500	NE 232nd Ave. vicinity	Realign (to correct bend in road)	Yes
SR-501	I-5 interchange to NW 31st Ave.	Add center left turn lane at intersections	Yes
SR-502	at NE 10th Ave./219th St. (Duluth)	Construct southbound left turn lane and northbound right turn lane	Yes
SR-502	Dollars Corner to Battle Ground	Widen, 2 lanes each direction with center left turn lane
SR-503	Lewisville Park vicinity	Construct climbing lanes
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Other Arterial and Collector System (italicized facilities/projects are off-system)
Facility	Cross Street	Improvements	Capacity Increase in 2017 MTP
SE 7th St.	Chkalov to SE 136th Av.	Widen to include center left turn lanes	Yes
SE 10th St.	Ellsworth to I-205	Widen, 2 lanes each direction
Mill Plain	Mill Plain Extension	Extension westward on new alignment from City of Vancouver to access Port of Vancouver. 2 lanes each direction with center left turn lane.
Mill Plain	I-205 to Chkalov	Widen to add 1 eastbound lane	Yes
Mill Plain	Chkalov to SE 164th Ave.	Add HOV lane	Yes
Mill Plain	Extension east from SE 172nd Ave. to SE 1st St.	Construct on new alignment. 2 lanes each direction with center left turn lanes.
NE 18th St.	NE 105th Ave. to NE 86th Ave.	Construct on new alignment. 1 lane each direction with center left turn lanes.
NE 18th St.	NE 105th Ave. to NE 86th Ave.	Widen to 5 lanes, 2 lanes each direction with center left turn lane and intersection improvements	Yes
Burton Rd.	Andresen to 86th Ave.	Widen to 5 lanes, 2 lanes each direction with center left turn lane	Yes
Burton Rd.	86th to NE 142nd Ave.	Widen to include center left turn lane and intersection improvements
Burton Rd.	NE 142nd Ave. to NE 162nd Ave.	Widen to include center left turn lane
NE 49th St.	NE 112th Ave. to 122nd Ave.	Widen, 2 lanes each direction and intersection improvements
NE 49th St.	NE 122nd Ave. to 137th Ave.	Widen, retain 1 lane each direction, add turn lanes
Fourth Plain	Railroad bridge to Mill Plain Extension	Construct center left turn lane to make 5-lean total width	Yes
Fourth Plain	Hazelwood to Falk	Widen to include center left turn lane
Fourth Plain	NE 62nd to NE 65th Ave.	Widen, 2 lanes each direction with center left turn lane
Fourth Plain	NE 65th/66th Ave.	Intersection realignment	Yes
Fourth Plain	NE 102nd to SR-503	Widen, 2 lanes each direction with center left turn lane
NE 78th St.	Lakeshore to Hazel Dell Ave.	Widen, 2 lanes each direction
NE 78th St.	NE 25th Ave. to St. John’s	Widen, 2 lanes each direction
Covington Rd.	Fourth Plain to NE 102nd Ave.	Widen, 2 lanes each direction	Yes
Padden Parkway	NE 53rd Ave. (at 78th St./Padden) to NE 83rd St. extending to Andresen Rd.	Construction on new alignment 2 lanes each direction
Padden Parkway	94th Ave. to SR-503	Construction on new alignment 2 lanes each direction
Padden Parkway	SR-503 to Ward Rd.	Construction on new alignment 1 lane each direction
Ward Rd.	S. of Davis to NE 119th St.	Realign and install turn lanes	Yes
NE 99th St.	NW 21st Ave. to Lakeshore	Widen to construct center left turn lane	Yes
NE 99th St.	NE 50th Ave. to St. John’s	Construct on new alignment, 1 lane each direction
NE 117/119th St.	Hwy. 99 to 26th Ave.	Realign 119th St (east of Hwy 99) with 117th St. (west of Hwy. 99)
NE 119th St.	NW 7th Ave. to Hazel Dell Ave.	Construct new collector road segment	Yes
NE 134th St.	Rockwell Dr. to WSU entrance	Widen, 2 lanes each direction	Yes
NE 179th St.	NE 2nd Ave. to NE 29th Ave.	Widen, 2 lanes each direction	Yes
NE 199th St.	SR-503 to Parkway, Battle Ground	Widen to include center left turn lane	Yes
Fruit Valley Rd.	34th St. to 39th St.	Widen to include center left turn lane
Main St.	5th St. to Mill Plain	Convert to 2-way traffic	Yes
NE 20th/15th Ave.	NE 134th St. to NE 179th St.	Widen to include center left turn lane
NE 29th Ave.	NE 134th St. to NE 179th St.	Widen to include center left turn lane	Yes
St. John’s	NE 50th Ave. to I-205	Widen, 2 lanes each direction	Yes
St. John’s	I-205 to NE 72nd Ave.	Widen, 2 lanes each direction	Yes
NE 72nd Ave.	NE 179th St. to NE 219th St.	Widen to include center left turn lane	Yes
NE 87th Ave.	Mill Plain to Fourth Plain	Extension on new alignment 1 lane each direction
Ellsworth	SE 10th St. to SR-14	Widen, 2 lanes each direction
NE 138th Ave.	NE 18th to NE 28th St.	Widen, 2 lanes each direction with sidewalks and bike lanes
NE 138th Ave.	NE 28th St. to NE 39th St.	Widen, 1 lane each dirction with sidewalks and bike lanes
NE 137th Ave.	NE 76th to NE 99th St.	New segment, 1 lane each direction with center left turn lane and shoulders
SE 164th Ave.	SE 34th St. to SE 1st St.	Widen, 2 lanes each direction plus HOV lane	Yes
SE 164th Ave.	at Mill Plain Blvd.	Add southbound right turn lane	Yes
SE 162nd Ave.	SE 1st St. to NE 39th St.	Widen, 2 lanes each direction and center left turn lane	Yes
SE 162nd Ave.	NE 39th St. to Fourth Plain	Widen, 2 lanes each direction and center left turn lane	Yes
SE 192nd Ave.	SR-14 to SE 15th St.	Construct, 2 lanes each direction	Yes
SE 192nd Ave.	SE 15th St. to NW 18th St.	Widen, 2 lanes each direction	Yes
Sierra St.	NW 33rd Ave. to NW 38th Ave.	Widen, 1 lane each direction
Parker St.	NW 38th Ave. to SE 1st St.	Widen, 2 lanes each direction and center left turn lane
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Transit
Facility	Improvements
Fixed-route system expansion	Service hours (both expansion of route system and frequency of service on certain routes) [per C-TRAN’s Service and Financial Plan, C-TRAN, 1996.] 1996 Annual Service Hours: 239,864 2017 Annual Service Hours: 300,000+
Fisher’s Landing Park and Ride	New facility
Central County Park and Ride	New facility (415+/- spaces)
I-5 Corridor Park and Ride	New facilities along I-5 corridor, including the vicinity of NE 88th St.
Seventh St. Transit Center	Expansion of existing facility
C-TRAN Headquarters	Expansion of headquarters facility

LRT Corridor (included in model)
Facility	Cross Street	Improvements
I-5	Interstate Bridge to VA Hospital vicinity	Construct LRT in I-5 corridor This segment is included in South/North Corridor Draft Environmental Impact Statement

HCT Corridors [included in designated regional transportation system] (also, see State Highway System)
Facility	Cross Street	Improvements
I-5	VA Hospital vicinity to NE 134th St.	HOV/Busway corridor (bus transit service included in model for this segment)
I-205	Glenn Jackson Bridge to NE 134th St.	HOV/Busway corridor (bus transit service included in model for this segment)
SR-500	I-5 to Orchards vicinity	HOV corridor (bus transit service included in model for this segment)

Projects listed above include both projects on the regional transportation system as well as projects off the regional system which have been included in the regional travel forecasting model network and have therefore been included in the regional air emissions analysis to meet the requirements of the federal Clean Air Act Amendments and Washington Clean Air Act.

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In addition to the above listed projects, the RTP is supportive of maintenance, preservation, safety, pedestrian, bicycle, enhancement, Transportation System Management (TSM), Transportation Demand Management (TDM) and any other project for which a need has been demonstrated through the regional transportation planning process that will serve to enhance the efficiency and operation of the regional transportation system.

Maintenance

Maintenance work ensures a safe, reliable and efficient transportation system on a day to day basis with such activities as pothole filling, repair of damaged bridges, incident response, maximizing operational efficiency by signal timing, snow clearing, vegetation planting and clearing, drainage and fence maintenance and litter removal. The MTP supports regional system maintenance work identified by WSDOT and local agencies.

Preservation

Preservation projects ensure that investment in the regional transportation system is protected. Specific projects include repaving of highways, refurbishing rest areas and bridge rehabilitation. Needs and projects are identified by local agencies and WSDOT through such programs as the Highway Performance Monitoring System (HPMS), ISTEA-required Pavement Management System (PMS) and Bridge Management System (BMS). Clark County bridge needs are listed in Appendix B.

Safety

Needs identified through the ISTEA-required Safety Management System (SMS) and local analysis.

Pedestrian and Bicycle Mode

Needs identified through state and local planning programs including recommendations from the Clark County Bicycle Advisory Committee, GMA plans and the Clark County Trails and Bikeway System Plan (December 1992; Clark County).

Notable pedestrian and bicycle projects in Clark County include completion of the City of Vancouver’s Columbia River Waterfront Trail, the Discovery Trail, the Columbia River/Evergreen Highway Trail, Hazel Dell Avenue bike lanes and SE 164th Avenue bike lanes. Also of regional significance is improvement of pedestrian and bicycle facilities which will improve access to transit facilities. Bike racks are already provided on C-TRAN fixed-route buses and bike lockers are provided at C-TRAN Transit Centers and Park and Rides. The bike rack and locker program will continue.

Transportation System Management

Potential TSM solutions are outlined in the State’s Statewide Multimodal Transportation Plan, System Plan Component as well as local GMA plans. They include projects to interconnect traffic signals, to optimize signal timing and to ramp meter certain interchange ramps on the interstate system.

Transportation Demand Management

Demand management activities are determined through the Commute Trip Reduction program ongoing in the Clark County region.

Should projects in the categories listed above require state or federal funding, they are brought forward to RTC as the region’s MPO to carry out a coordinated decision-making process whereby projects are prioritized and selected for funding. Regional level air quality conformity analysis is prepared by RTC and project level conformity analysis, where required, is prepared by RTC for local projects and by WSDOT for State projects.

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Clean Air Conformity Determination

Air Quality Conformity Statement

The Metropolitan Transportation Plan for Clark County is found to contribute to emission reductions and is found to be in conformity with the Federal Clean Air Act as amended in 1990 and the Washington Clean Air Act (chapter 70.94 RCW). The MTP does not adversely impact the existing SIP and is in conformity with it.

All regionally significant transportation improvement projects are included in the regional travel forecasting model for purposes of air quality conformity analysis. A brief description of air quality conformity analysis methodology and results table follows.

Air Quality Conformity Methodology and Results

The Southwest Washington Air Pollution Control Authority (SWAPCA) has developed, as supplements to the State Implementation Plan, two Maintenance Plans; 1) for Carbon Monoxide (CO), and 2) for Ozone (O₃). Both Plans were submitted to the Environmental Protection Agency (EPA) for approval. In October, 1996 the CO Maintenance Plan was approved by EPA and the Ozone Maintenance Plan is still being considered. Mobile source strategies contained in the Maintenance Plans have been endorsed for implementation by the RTC Board of Directors (Resolution 02-96-04).

The MTP must comply with the mobile emissions budgets specified in the Maintenance Plans. The test is designed to prevent violation of the National Ambient Air Quality Standards (NAAQS); transportation emissions are not allowed to exceed levels relied upon in the Maintenance Plan demonstration. To ensure consistent assumptions, the same methodology used to develop mobile emissions budgets for the Maintenance Plans is used in the MTP air quality conformity process.

The air quality conformity analysis relies on travel data for three time periods (the AM 1-hour, the PM 2-hour, and the rest-of-the-day) and is based on use of emme/2, regional travel model software, and on use of Mobile 5ah to determine emissions rates as part of the emissions calculations. Input assumptions for Mobile 5ah were received from the Southwest Washington Air Pollution Control Authority (SWAPCA) and the Oregon State Department of Environmental Quality (ODEQ). Hot stabilized emissions are calculated for each link in the system.

Each of the emitted gases (Carbon Monoxide (CO), Hydrocarbons (HC) and Nitrogen Oxides (NOx), has several categories of emission that make up the all-day total; hot starts, cold starts, and hot stabilized emissions. In addition, HC emissions also include hot soaks (which occur at the end of a trip in the destination zone), and diurnal emissions (those which occur during the day as rising temperatures cause vehicles to produce emissions through evaporation). CO is calculated for both summer and winter conditions, but HC and NOx are computed only for summer conditions. The emissions calculations includes emissions caused by intra-zonal trips (trips which begin and end in the same Transportation Analysis Zone (TAZ). All outputs were seasonally adjusted based on EPA/SWAPCA guidance.

2017 Metropolitan Transportation Plan:
Air Quality Conformity Analysis Results
Emissions Estimates

Year / Emission Emissions Estimate
(Pounds) Budget
(Pounds) Emissions Estimate
(Tons) Budget
(Tons)

Hydrocarbons (HC)

1997 13 13

2007 9 9

2017 8 12

Nitrous Oxides (NOx)

1997 13 15

2007 11 11

2017 11 14

Winter Carbon Monoxide (WCO)

1997 296,839 300,000

2007 191,769 260,000

2017 255,708 260,000

2017 Metropolitan Transportation Plan: Air Quality Conformity Analysis Results Emissions Estimates
Year / Emission	Emissions Estimate (Pounds)	Budget (Pounds)	Emissions Estimate (Tons)	Budget (Tons)
Hydrocarbons (HC)
1997			13	13
2007			9	9
2017			8	12
Nitrous Oxides (NOx)
1997			13	15
2007			11	11
2017			11	14
Winter Carbon Monoxide (WCO)
1997	296,839	300,000
2007	191,769	260,000
2017	255,708	260,000

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Appendix B

Clark County Region: Twenty Year Bridge Needs

Clark County Region: Twenty Year Bridge Needs

Bridge Number Bridge Name Mile Post Year Built Deck Area (Sq. Ft.) Description Estimated Cost

Reduce Risk of Naturally-Caused Catastrophic Failures (WSDOT Service Objective H-19):

503/16 Cedar Creek 20.67 1958 700 Waterway Adequacy $185,000

Preserve Structural and Operational Integrity (WSDOT Service Objective H-16):

5/1E Columbia River Interstate 0.00 1916 134,330 Movable Bridge, Rehabilitation $81,000

5/1W Columbia River Interstate 0.00 1958 141,520 Movable Bridge, Rehabilitation $81,000

5/22E Salmon Creek 6.32 1959 11,067 Paint Bridge $29,000

5/22W Salmon Creek 6.32 1959 10,710 Paint Bridge $29,000

5/23 NE 129th St. u/c 6.98 1961 4,940 Deck Overlay $222,000

5/36E East Fork Lewis River 18.21 1940 40,896 Paint Bridge $133,000

5/36W East Fork Lewis River 18.21 1969 42,288 Paint Bridge $126,000

5/40W Lewis River 19.83 1940 62,880 Paint Bridge $461,000

5/40E Lewis River 19.83 1968 51,648 Paint Bridge $335,000

14/25 West Camas Slough 12.62 1964 31,140 Paint Bridge $193,000

14/38 Lawton Creek 20.90 1925 1,056 Future Bridge Replacement $279,000

501/8E NP Railway SPS Rwy. o/c 1.60 1962 14,160 Paint Bridge $39,000

501/20 Gee Creek 17.66 1965 1,608 Paint Bridge $10,000

503/6 Salmon Creek 5.38 1923 11,775 Narrow Bridge $264,000

503/17 Chelatchie Creek 20.76 1953 930 Paint Bridge $4,000

503/26 Lewis River, Yale 27.84 1932 7,786 Paint Bridge $61,000

Modify or Replace Bridges with Vertical Underclearances Less than 15'6" (WSDOT Service Objective H-35):

5/24 NE 134th St. u/c, Co. Rd. 7.24 1959 4,940 Low Vertical Clearance $1,304,000

Modify or Replace Bridges to Carry Legal Overloads (WSDOT Service Objective H-19):

503/26 Lewis River, Yale 27.84 1932 7,786 Overload Restoration $3,640,000

Clark County Region: Twenty Year Bridge Needs
Bridge Number	Bridge Name	Mile Post	Year Built	Deck Area (Sq. Ft.)	Description	Estimated Cost
Reduce Risk of Naturally-Caused Catastrophic Failures (WSDOT Service Objective H-19):
503/16	Cedar Creek	20.67	1958	700	Waterway Adequacy	$185,000
Preserve Structural and Operational Integrity (WSDOT Service Objective H-16):
5/1E	Columbia River Interstate	0.00	1916	134,330	Movable Bridge, Rehabilitation	$81,000
5/1W	Columbia River Interstate	0.00	1958	141,520	Movable Bridge, Rehabilitation	$81,000
5/22E	Salmon Creek	6.32	1959	11,067	Paint Bridge	$29,000
5/22W	Salmon Creek	6.32	1959	10,710	Paint Bridge	$29,000
5/23	NE 129th St. u/c	6.98	1961	4,940	Deck Overlay	$222,000
5/36E	East Fork Lewis River	18.21	1940	40,896	Paint Bridge	$133,000
5/36W	East Fork Lewis River	18.21	1969	42,288	Paint Bridge	$126,000
5/40W	Lewis River	19.83	1940	62,880	Paint Bridge	$461,000
5/40E	Lewis River	19.83	1968	51,648	Paint Bridge	$335,000
14/25	West Camas Slough	12.62	1964	31,140	Paint Bridge	$193,000
14/38	Lawton Creek	20.90	1925	1,056	Future Bridge Replacement	$279,000
501/8E	NP Railway SPS Rwy. o/c	1.60	1962	14,160	Paint Bridge	$39,000
501/20	Gee Creek	17.66	1965	1,608	Paint Bridge	$10,000
503/6	Salmon Creek	5.38	1923	11,775	Narrow Bridge	$264,000
503/17	Chelatchie Creek	20.76	1953	930	Paint Bridge	$4,000
503/26	Lewis River, Yale	27.84	1932	7,786	Paint Bridge	$61,000
Modify or Replace Bridges with Vertical Underclearances Less than 15'6" (WSDOT Service Objective H-35):
5/24	NE 134th St. u/c, Co. Rd.	7.24	1959	4,940	Low Vertical Clearance	$1,304,000
Modify or Replace Bridges to Carry Legal Overloads (WSDOT Service Objective H-19):
503/26	Lewis River, Yale	27.84	1932	7,786	Overload Restoration	$3,640,000

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Maintenance
	Maintenance work ensures a safe, reliable and efficient transportation system on a day to day basis with such activities as pothole filling, repair of damaged bridges, incident response, maximizing operational efficiency by signal timing, snow clearing, vegetation planting and clearing, drainage and fence maintenance and litter removal. The MTP supports regional system maintenance work identified by WSDOT and local agencies.

Preservation
	Preservation projects ensure that investment in the regional transportation system is protected. Specific projects include repaving of highways, refurbishing rest areas and bridge rehabilitation. Needs and projects are identified by local agencies and WSDOT through such programs as the Highway Performance Monitoring System (HPMS), ISTEA-required Pavement Management System (PMS) and Bridge Management System (BMS). Clark County bridge needs are listed in Appendix B.

Safety
	Needs identified through the ISTEA-required Safety Management System (SMS) and local analysis.

Pedestrian and Bicycle Mode
	Needs identified through state and local planning programs including recommendations from the Clark County Bicycle Advisory Committee, GMA plans and the Clark County Trails and Bikeway System Plan (December 1992; Clark County). Notable pedestrian and bicycle projects in Clark County include completion of the City of Vancouver’s Columbia River Waterfront Trail, the Discovery Trail, the Columbia River/Evergreen Highway Trail, Hazel Dell Avenue bike lanes and SE 164th Avenue bike lanes. Also of regional significance is improvement of pedestrian and bicycle facilities which will improve access to transit facilities. Bike racks are already provided on C-TRAN fixed-route buses and bike lockers are provided at C-TRAN Transit Centers and Park and Rides. The bike rack and locker program will continue.

Transportation System Management
	Potential TSM solutions are outlined in the State’s Statewide Multimodal Transportation Plan, System Plan Component as well as local GMA plans. They include projects to interconnect traffic signals, to optimize signal timing and to ramp meter certain interchange ramps on the interstate system.

Transportation Demand Management
	Demand management activities are determined through the Commute Trip Reduction program ongoing in the Clark County region.

Appendix A

Transportation Capacity Improvements Assumed in MTP Network and Air Quality Analysis

Clean Air Conformity Determination

Air Quality Conformity Statement

Air Quality Conformity Methodology and Results

Appendix B

Clark County Region: Twenty Year Bridge Needs

Clark County Region: Twenty Year Bridge Needs

This report was prepared by:

Send mail to webmaster@rtc.wa.gov with questions or comments about this web site. Last modified: March 3, 1997

Transportation Capacity Improvements Assumed
in MTP Network and Air Quality Analysis

Send mail to webmaster@rtc.wa.gov with questions or comments about this web site.
Last modified: March 3, 1997