Line 5-Interstate operates from Vancouver Transit Center to Downtown Portland and is then through-routed to Line 5-Capital Highway. Although through-routed lines are highly efficient in terms of resource allocation, they are more susceptible to reliability problems due to their length.
Service disruptions on one end of the route can result in delays and passenger inconvenience on the other end of the route. Because of the high probability of substantial delays due to traffic congestion caused by the bridge closure, Line 5-Interstate will be shortlined in the Kenton Park area.
Kenton Park was selected because it is the farthest northern point on the route that can be reached reliably. Line 5 buses should not be subjected to delay due to traffic congestion attempting to reach the Kenton Park area.
Hayden Meadows and Jantzen Beach were determined to be too risky to try and reach due to expected congestion. Transit operations will be further complicated by the closure of the northbound on ramp from Jantzen Beach to I-5. This closure will require all traffic traveling from Jantzen Beach to Vancouver to go south on I-5 to the Delta Park area and turn around.
ODOT plans to close the northbound on ramps from Marine Drive and MLK Jr. Blvd. to autos, however they will allow buses only to use the Marine Drive on ramp to I-5 northbound. This will shorten out-of-direction travel, and allow buses bound for Vancouver to rejoin the traffic queue at a more advantageous point. Autos will be directed to Victory Blvd. at Hayden Meadows to turn around.
Due to the expected traffic congestion and the difficulty of serving Jantzen Beach and Vancouver, Tri-Met will employ a three-shuttle system north of the Kenton Park terminus of Line 5-Interstate. A three-shuttle approach based on a transfer location in Kenton will considerably reduce travel time and out-of-direction travel for most customers. While this plan may require more buses and greater operation supervision, it provides the best possible customer support considering the circumstances.
The shuttle plan responds to the three distinct travel markets now served by Line 5-Interstate:
- Travel between Vancouver and Jantzen Beach
- Travel between Portland and Jantzen Beach
- Travel between Portland and Vancouver
Shuttle operation will be as follows:
Red Shuttle - Running from the Vancouver TC to Jantzen Beach and back to the Vancouver TC.
Blue Shuttle - Running from the Kenton transfer location to Jantzen Beach and back to the Kenton transfer location.
Green Shuttle - Running from Vancouver TC direct to the Kenton transfer to Line #5, then back to Vancouver TC.
All three shuttles will operate seven days a week, throughout Line 5's service day. It is expected that three buses will be required during peak hours on each shuttle route to maintain reliable service.
Blue and Green shuttles will use the Denver Ave. "Bus Only" lane to bypass any traffic queues to enter I-5 from the Kenton area. ODOT will be asked to see if the bus lane can temporarily be extended through an underpass to provide even better queue bypass opportunities. Should the Denver Ramp become congested alternate shuttle routes will be implemented. The Red shuttle will use the Marine Drive "Bus Only" on-ramp to return to I-5 after leaving Jantzen Beach for Vancouver.
Road Supervisors, in conjunction with Bus Dispatchers using Automatic Vehicle Location (AVL), will need to closely monitor and manage bus movements to ensure the best possible transfer connection for passengers. Supervisors may need to be located at the Kenton transfer location, Jantzen Beach, and possibly the Vancouver TC stop.
Efforts are underway to arrange use of a vacant lot between Argyle and Willis, across from Kenton Park. The lot would be used as a temporary off street transfer facility. Passenger amenities such as shelters, lighting, telephones, etc. would be installed during the project. Should the lot be unavailable, Tri-Met will then use city streets in the area of the Kenton Park. The City of Portland Parking Control Department has indicated that they would make special on-street no parking area arrangements for our buses if necessary.