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Did you know? The oldest bridge in the NBI was built in 1697.
over Columbia R./So. Channel
1.25 MI S ORE-WASH LINE
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Fair overall condition rating of 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 148,936 vehicles per day and is 44 years old.
Its sufficiency rating of 65.7 is above the national average of 63.6.
The NBI records a navigation clearance of 33 feet — the minimum vertical space below the bridge deck. The total height of the bridge structure (including towers, railings, and superstructure) may be higher.
For travelers with bridge anxiety
This bridge has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 3115 feet long — a longer crossing, over 1 minute.
A standard overpass design with solid barriers on each side.
About 33 feet above ground — moderate height, similar to a 3-5 story building.
About 148,936 vehicles cross daily — very heavy traffic, high congestion risk.
The deck is 136 feet wide with multiple lanes — easy to stay in a center lane.
This bridge crosses over water. Focus on the road ahead — the water is far below.
This comfort score is designed to help individuals with bridge anxiety plan their travel. All bridges in the National Bridge Inventory are regularly inspected and deemed safe for travel. This is not medical advice — if you experience severe anxiety, please consult a healthcare professional.
Year Built
1982
44 years old
Structure Type
Prestressed Concrete Box Beam (Multiple)
Total Length
3,115 ft
949.5 m
Deck Width
136 ft
41.5 m
Spans
17
sections between supports
Max Span
200 ft
longest unsupported section (61.0 m)
Traffic Lanes
8 lanes
Two-way traffic
Clearance Below
33 ft
navigation clearance under deck
Clearance height compared to familiar objects
Height shown is the navigation clearance below the bridge deck. The total height of the bridge structure (including towers and superstructure) may be higher.
Daily Traffic
148,936vehicles/day
45.57681°N, 122.54481°W
Prestressed Concrete Box Beam (Multiple)
A prestressed concrete box beam bridge combines hollow box sections with prestressing technology, enabling longer spans with reduced weight and material usage.
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Data from the National Bridge Inventory (NBI), maintained by the Federal Highway Administration (FHWA).
Data year: 2025. Conditions may have changed since the last inspection.
This information is provided for educational and informational purposes only. It should not be used as the sole basis for any decisions related to bridge safety or transportation planning. Always consult official sources and local authorities for the most current data.