Interstate Bridge

PortlandUnited States of America 45° N · 122° W Verified Jul 2025

Spanning the majestic Columbia River, the Interstate Bridge stands as a vital and historic connector between Portland, Oregon, and Vancouver, Washington.

View map
Interstate Bridge

Introduction: The Interstate Bridge’s Legacy and Modern Role

The Interstate Bridge is an iconic structure spanning the Columbia River, connecting Portland, Oregon, and Vancouver, Washington. Since its original opening in 1917 and the addition of a second span in 1958, this bridge has been a crucial artery for the Pacific Northwest—facilitating commerce, commuting, and cultural exchange between two thriving cities. With over 130,000 vehicles crossing daily, the bridge is a testament to the region’s growth and a symbol of unity and resilience.

Yet, as traffic volumes soar and the bridge ages, modernization has become essential. The ongoing Interstate Bridge Replacement Project seeks to deliver a seismically resilient, multimodal crossing with expanded capacity and dedicated transit, cycling, and pedestrian routes. This guide provides detailed information for visitors and commuters, including access tips, historical context, best viewing areas, construction updates, and travel advice to help you make the most of your experience.

For real-time updates and further details, consult the Interstate Bridge Replacement Program website, the Oregon Department of Transportation, The Reflector, and OPB.

Thunderbird Motel along the banks of the Columbia River
Black and white photo showing Thunderbird Motel, one of the many new businesses along the banks of the Columbia River.
Steel machinery for the lift span of the Columbia River Interstate Bridge assembled in manufacturing shop
Steel machinery for operating the lift span of the Columbia River Interstate Bridge fully assembled in the manufacturing shop and placed on structural members to ensure accurate fitting, showcasing the simplicity of the operating machinery.
Columbia River Interstate Bridge near Vancouver end showing towers and lift span
Detailed near view of the Columbia River Interstate Bridge at Vancouver end, highlighting the towers and the 1,200-ton lift span with 600-ton counterweights, capable of lifting 136 ft above the piers, with towers reaching 190 ft above roadway.

Historical Background and Development

The Interstate Bridge was inaugurated in 1917 as the first fixed crossing over the Columbia River between Oregon and Washington. Its original steel vertical-lift span was a marvel of early 20th-century engineering. In response to growing traffic, a second span was added in 1958, integrating the bridge into the then-new Interstate 5—now the West Coast’s primary north-south corridor (Oregon History Project).

Since then, the bridge has enabled a dramatic increase in cross-state mobility and commerce. Daily traffic grew from 33,000 vehicles in the 1960s to over 130,000 in recent years (Washington State Standard).

Visiting the Interstate Bridge: Hours, Access, and Tips

Visiting Hours and Ticket Information

  • Open 24/7 The bridge is available at all hours for vehicles, pedestrians, and cyclists.
  • No Tickets Required Crossing is free and does not require advance booking or entry passes.
  • Events & Guided Tours Special events, such as bridge-focused tours, are sometimes organized by local transportation departments. Check their websites for updates.

Getting There and Accessibility

  • By Car Access via Interstate 5 from either downtown Portland or Vancouver. Parking is available at nearby locations such as Tom McCall Waterfront Park (Portland) and Esther Short Park (Vancouver).
  • By Bike/On Foot The bridge features narrow sidewalks adjacent to traffic. Cyclists and pedestrians should exercise caution, especially during peak hours or bridge lift operations.
  • Public Transit TriMet (Portland) and C-TRAN (Vancouver) run bus routes across the bridge. A future light rail extension is planned as part of the replacement project (Wikipedia, Interstate Bridge Project).
  • Accessibility The sidewalks are not ADA-compliant; those with mobility impairments may find crossing challenging.

Travel Tips

  • Avoid Rush Hours Peak congestion occurs 6:30–9:30 a.m. and 3:00–7:00 p.m. on weekdays.
  • Bridge Lifts The bridge’s lift span can delay traffic for up to 20 minutes. For real-time lift schedules, check the Oregon Department of Transportation.
  • Safety Remain alert on narrow sidewalks; wear visible clothing and consider alternative crossings if you require fully accessible facilities.

Best Photographic Spots

Capture the bridge’s striking steelwork, river vistas, and city skylines from these vantage points:

  • Tom McCall Waterfront Park (Portland) Sweeping river and skyline views.
  • Vancouver Waterfront Park Close-ups of the bridge and river traffic, especially at sunset.
  • Hayden Island Unique mid-river perspectives.
  • Chalk Street Pier Ideal for sunrise and sunset photography.

For inspiration, search “Interstate Bridge Portland photos” or “best spots for Interstate Bridge photography.”

Nearby Attractions and Events

While the bridge itself is not a venue, its approaches offer access to some of the region’s most dynamic attractions:

  • Portland’s Old Town Chinatown Historic architecture, dining, and shopping.
  • Esther Short Park (Vancouver) Community events and green space.
  • Columbia River Waterfront Trail Ideal for walking, biking, and river views.
  • Hayden Island Shopping, dining, and marina access.
  • Columbia River Gorge Waterfalls and hiking, a short drive east (Going.com).

Major Events

  • Waterfront Blues Festival & Pride Festival Held at Tom McCall Waterfront Park (Travel Portland).
  • Cathedral Park Jazz Festival Major free jazz event nearby.
  • Bridge Pedal Annual cycling event sometimes including the Interstate Bridge (Bridge Pedal).

Economic and Regional Importance

The Interstate Bridge is indispensable for regional commuters and national freight. Over $132 million in goods cross daily, representing a significant share of Oregon and Washington’s economic output (Hoodline; Interstate Bridge Replacement Program FAQ).

Structural & Safety Challenges

Despite its historical importance, the bridge’s narrow lanes, lack of safety shoulders, and seismic vulnerability pose safety concerns (Washington State Standard). The current structure is considered functionally obsolete and unlikely to withstand a major earthquake. Modernization is not only necessary for safety, but also to support increased multimodal transportation.

The Replacement Project: Vision and Timeline

Project Scope

  • Location Two new bridges west of current spans.
  • Capacity Three through lanes each way, wider lanes (12 ft), safety shoulders, and auxiliary lanes.
  • Multimodal Features 1.9-mile light rail extension, improved pedestrian/cyclist facilities.
  • Seismic Resilience Built to modern earthquake standards.
  • Urban Connectivity Vancouver’s I-5 “lid” will create green space and a public transit hub (OPB).

Funding

  • Estimated Cost $5–$7.5 billion.
  • Secured Funding $1.5 billion federal grant, $600 million Mega Grant, $1 billion each from Oregon and Washington; additional funds via tolling and federal transit programs (Hoodline).

Timeline

  • 2024 Draft Supplemental Environmental Impact Statement (SEIS) released.
  • 2025 SEIS finalized.
  • 2026 Pre-construction begins.
  • 2027 In-water construction commences.
  • 2032 Anticipated completion (OPB).

Traffic and Tolling

  • Tolls Variable-rate tolling may begin by 2026, with discounts for low-income drivers under consideration (KATU News).
  • Traffic Impacts Expect lane closures and detours during construction; monitor Interstate Bridge Project for updates.

Social, Environmental, and Community Considerations

Frequently Asked Questions (FAQ)

Q: Are there visiting hours or tickets required?
A: No, the bridge is open 24/7 to vehicles, cyclists, and pedestrians; no tickets are needed.

Q: Is the bridge accessible for pedestrians and cyclists?
A: Yes, but sidewalks are narrow and not ADA-compliant; exercise caution.

Q: Will there be tolls on the new bridge?
A: Yes, variable-rate tolling is planned; details will be finalized by a bi-state committee.

Q: How can I avoid traffic delays?
A: Plan around rush hours, check real-time updates on the Interstate Bridge Project, and consider public transit.

Q: What are the best places for photography?
A: Tom McCall Waterfront Park, Vancouver Waterfront, Hayden Island, and Chalk Street Pier.

Q: How will construction affect my visit?
A: Expect detours and closures from 2027; stay updated via official channels.

Key Facts and Figures

  • Opened 1917 (original), 1958 (second span)
  • Daily Traffic 130,000–140,000 vehicles
  • Freight Value Over $132 million daily
  • Replacement Cost $5–$7.5 billion
  • Project Completion 2032 (anticipated)
  • Public Engagement Ongoing (Interstate Bridge Replacement Program)