Loading structural data... this is riveting stuff.
Loading structural data... this is riveting stuff.
Did you know? The oldest bridge in the NBI was built in 1697.
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
Loading 3D model...
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 46,335 vehicles per day and is 63 years old.
Its sufficiency rating of 61.5 places it below the national average of 63.6.
The NBI records a navigation clearance of 28 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 may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 1222 feet long — a moderate crossing, about 30 seconds.
A standard overpass design with solid barriers on each side.
About 28 feet above ground — moderate height, similar to a 3-5 story building.
About 46,335 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 49 feet wide with 2-3 lanes — moderate width.
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
1963
63 years old
Structure Type
Concrete (Continuous) Box Beam (Multiple)
Total Length
1,222 ft
372.5 m
Deck Width
49 ft
14.8 m
Spans
6
sections between supports
Max Span
218 ft
longest unsupported section (66.4 m)
Traffic Lanes
4 lanes
One-way traffic
Clearance Below
28 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
46,335vehicles/day
47.64758°N, 117.44894°W
Concrete (Continuous) Box Beam (Multiple)
A concrete box beam bridge uses hollow rectangular concrete sections. The box shape provides excellent torsional resistance and allows for longer spans.
Learn more about this bridge typeNo ratings yet. Be the first to rate this bridge!
Sign in and track Washington to receive alerts when new inspection data is published. Premium members get bridge-specific notifications.
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.