Wow, there are a lot of bridges here... one second please.
Wow, there are a lot of bridges here... one second please.
The Golden Gate Bridge uses 80,000 miles of wire in its cables.
over SALMON BROOK
3.3 MI N MASS SL
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Good overall condition rating of 7 out of 9. It is in good structural condition and is not classified as structurally deficient.
The bridge carries 128,889 vehicles per day and is 71 years old (reconstructed in 1996).
Its sufficiency rating of 76.1 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge may cause some awareness for travelers with bridge anxiety, but has manageable characteristics.
This bridge is 20 feet long — a quick crossing, under 5 seconds at highway speed.
This is a culvert — you may not even notice you're crossing it.
No height data available — likely a standard overpass height.
About 128,889 vehicles cross daily — very heavy traffic, high congestion risk.
The deck is 0 feet wide — a very narrow, single-lane 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
1955
71 years old (rebuilt 1996)
Structure Type
Concrete Culvert
Total Length
20 ft
6.1 m
Spans
1
sections between supports
Max Span
20 ft
longest unsupported section (6.1 m)
Traffic Lanes
9 lanes
Two-way traffic
Daily Traffic
128,889vehicles/day
42.73324°N, 71.47206°W
Concrete Culvert
A concrete culvert is a drainage structure that allows water to flow beneath a road. While technically not a traditional bridge, culverts over 20 feet are tracked in the national inventory.
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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.