Did you know? The oldest bridge in the NBI was built in 1697.
Did you know? The oldest bridge in the NBI was built in 1697.
What's a bridge's favorite exercise? Cross-fit.
over SB SHINGLE HOUSE SLOUGH
02.3 MI S HWY 241 JCT
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 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 9,357 vehicles per day and is 37 years old.
Its sufficiency rating of 70.0 is above the national average of 63.6.
The NBI records a navigation clearance of 7 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 172 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 7 feet above ground — standard overpass height.
About 9,357 vehicles cross daily — light traffic, a smooth crossing.
The deck is 40 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
1989
37 years old
Structure Type
Prestressed Concrete Slab
Total Length
172 ft
52.5 m
Deck Width
40 ft
12.2 m
Spans
3
sections between supports
Max Span
61 ft
longest unsupported section (18.6 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
7 ft
navigation clearance under deck
Daily Traffic
9,357vehicles/day
43.32595°N, 124.20585°W
Prestressed Concrete Slab
A prestressed concrete slab bridge uses a flat concrete deck that has been pretensioned for additional strength. Efficient for short to medium spans.
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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.