Gathering condition ratings from coast to coast...
Gathering condition ratings from coast to coast...
The average US bridge is 48 years old. That's a lot of birthday candles.
over GRANT LINE CANAL
3 MI N OF I 205
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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 4,513 vehicles per day and is 67 years old.
Its sufficiency rating of 60.5 places it below the national average of 63.6.
The NBI records a navigation clearance of 10 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 471 feet long — a short crossing, about 10-15 seconds.
A movable bridge — it may occasionally stop for boat traffic.
About 10 feet above ground — standard overpass height.
About 4,513 vehicles cross daily — light traffic, a smooth crossing.
The deck is 31 feet wide with 1-2 lanes — a narrower crossing.
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
1959
67 years old
Structure Type
Steel Movable (Bascule)
Total Length
471 ft
143.6 m
Deck Width
31 ft
9.4 m
Spans
1
sections between supports
Max Span
122 ft
longest unsupported section (37.3 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
10 ft
navigation clearance under deck
Daily Traffic
4,513vehicles/day
37.81903°N, 121.44967°W
Steel Movable (Bascule)
A movable bridge can change position to allow passage of boats or other traffic. Steel movable bridges include lift, bascule (drawbridge), and swing types.
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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.