A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
The Golden Gate Bridge uses 80,000 miles of wire in its cables.
over PA 309(LR 781 SB)
OVER PA 309(LR 781)
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 32,735 vehicles per day and is 37 years old.
Its sufficiency rating of 72.2 is above the national average of 63.6.
The NBI records a navigation clearance of 15 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 223 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 15 feet above ground — standard overpass height.
About 32,735 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 101 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
1989
37 years old
Structure Type
Prestressed Concrete Stringer/Multi-beam/Girder
Total Length
223 ft
68.0 m
Deck Width
101 ft
30.9 m
Spans
3
sections between supports
Max Span
119 ft
longest unsupported section (36.3 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
15 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
32,735vehicles/day
40.57769°N, 75.55189°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.