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 Lk Underhill Rd (SR-15)
SR-408 EB-Lk Underhill Rd
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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 77,500 vehicles per day and is 53 years old (reconstructed in 2010).
Its sufficiency rating of 65.7 is above the national average of 63.6.
The NBI records a navigation clearance of 16 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 138 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
About 16 feet above ground — moderate height, similar to a 3-5 story building.
About 77,500 vehicles cross daily — heavy traffic, congestion likely during rush hours.
The deck is 83 feet wide with multiple lanes — easy to stay in a center lane.
This bridge crosses over land, not water — no water views 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
1973
53 years old (rebuilt 2010)
Structure Type
Prestressed Concrete Stringer/Multi-beam/Girder
Total Length
138 ft
42.1 m
Deck Width
83 ft
25.3 m
Spans
3
sections between supports
Max Span
61 ft
longest unsupported section (18.7 m)
Traffic Lanes
5 lanes
One-way traffic
Clearance Below
16 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
77,500vehicles/day
28.53824°N, 81.34167°W
Prestressed Concrete Stringer/Multi-beam/Girder
A prestressed concrete stringer bridge uses pretensioned concrete beams, where steel tendons are stretched before concrete is poured. This creates stronger, lighter 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.