|
Travel times
in the I-5 Corridor improve significantly
The time to
travel between downtown Portland and downtown Vancouver for autos
and trucks in the evening peak period:
- Baseline
2020 = 30 minutes
- "3
lanes" = 21 minutes
The time to
travel between Salmon Creek and downtown Portland for autos and
trucks in the evening peak period:
- Baseline
2020 = 38 minutes
- "3 lanes"
= 31 minutes
The time travel
savings are entirely attributable to the 4 lane supplemental bridge.
|
Travel times
in the I-5 Corridor improve significantly:
The time to
travel between downtown Portland and downtown Vancouver for autos
and trucks in the evening peak period:
- Baseline
2020 = 30 minutes
- "4 lanes"
= 20 minutes
The time to
travel between Salmon Creek and downtown Portland for autos and
trucks in the evening peak period:
- Baseline
2020 = 38 minutes
- "4 lanes"
= 30 minutes (4th lane as HOV lane)
- "4 lanes"
= 21 minutes (4th lane as a reversible lane)
The time travel
savings are entirely attributable to the 6 lane supplemental bridge.
|
|
Improves overall
congestion levels on the bi-state freeway system during the peak
periods of travel.
Unless additional
vehicle capacity is added across the Columbia River, the number
of trips on I-5 cannot increase.
Most trips
from the Vancouver area have their destination in central Portland
and the most direct route is I-5. With a new river crossing, people
have a better ability to choose the most direct path for their
trip.
I-5 corridor
volumes increase:
- Baseline
2020 = 25,800 vehicles
- "3
lanes" = 35,000 vehicles
Without improvements
on I-5, the I-205 bridge volumes grow. With the improvements on
I-5, volumes on the I-205 bridge decrease because some trips that
now occur on I-205 would shift to I-5.
I-205 corridor
volumes decrease:
- Baseline
2020 = 32,500 vehicles
- "3
lanes" = 25,000 vehicles
|
Improves overall
congestion levels on the bi-state freeway system during the peak
periods of travel.
Unless additional
vehicle capacity is added across the Columbia River, the number
of trips on I-5 cannot increase.
Most trips
from the Vancouver area have their destination in central Portland
and the most direct route is I-5. With a new river crossing, people
have a better ability to choose the most direct path for their
trip.
I-5 corridor
volumes increase:
- Baseline
2020 = 25,800 vehicles
- "4 lanes"
= 36,300 vehicles
Without improvements
on I-5, the I-205 bridge volumes grow. With the improvements on
I-5, volumes on the I-205 bridge decrease because some trips that
now occur on I-205 would shift to I-5.
I-205 corridor
volumes decrease:
- Baseline
2020 = 32,500 vehicles
- "4 lanes"
= 23,000 vehicles
|
|
Reduces hours
of vehicle delay:
Truck routes:
- Baseline
2020 = 17,100 hours of vehicle delay
- "3-lane"
= 12,300 hours of vehicle delay
- "3-lane"
= 11,600 hours of vehicle delay
All other
roads in study area:
- Baseline
2020 = 4360 hours of vehicle delay
- "3-lane"
= 4330 hours of vehicle delay (with Express bus)
- "3-lane"
= 4200 hours of vehicle delay (with light rail)
|
Reduces hours
of vehicle delay:
Truck routes:
- Baseline
2020 = 17,100 hours of vehicle delay
- "4-lane"
= 12,000 hours of vehicle delay
- "4-lane"
= 10,400 hours of vehicle delay
All other
roads in study area:
- Baseline
2020 = 4360 hours of vehicle delay
- "4-lane"
= 3890 hours of vehicle delay (with Express bus)
- "4-lane"
= 3680 hours of vehicle delay (with light rail)
|
|
24 displacements.
All most all
of the displacements are on Hayden Island and are due to the new
4 lane supplemental bridge.
|
42 displacements.
Of the displacements,
29 are due to the Vancouver interchange modifications between
4th Plain and SR500. Most of the remainder are due to the new
supplemental bridge and are located on Hayden Island.
|
