Analyzing deck conditions, superstructure ratings, and bad puns...
Analyzing deck conditions, superstructure ratings, and bad puns...
Almost there! Just bridging the gap...
over WHITE SLOUGH (HONKER CUT
5 MI WEST OF I-5
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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 958 vehicles per day and is 90 years old (reconstructed in 1975).
Its sufficiency rating of 53.7 places it below the national average of 63.6.
The NBI records a navigation clearance of 4 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 480 feet long — a short crossing, about 10-15 seconds.
A movable bridge — it may occasionally stop for boat traffic.
About 4 feet above ground — standard overpass height.
Only about 958 vehicles cross daily — very light traffic with low congestion risk.
The deck is 21 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
1936
90 years old (rebuilt 1975)
Structure Type
Steel Movable (Swing)
Total Length
480 ft
146.3 m
Deck Width
21 ft
6.3 m
Spans
1
sections between supports
Max Span
204 ft
longest unsupported section (62.2 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
4 ft
navigation clearance under deck
Daily Traffic
958vehicles/day
38.05934°N, 121.46001°W
Steel Movable (Swing)
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.