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Why did the bridge go to therapy? It had too many spans of anxiety.
over MINERAL SPRINGS CR. STS.
LINDBERGH VIADUCT
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 5 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 9,576 vehicles per day and is 99 years old (reconstructed in 2003).
Its sufficiency rating of 60.6 places it below the national average of 63.6.
The NBI records a navigation clearance of 37 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 563 feet long — a short crossing, about 10-15 seconds.
An arch bridge design with some openness to the surroundings.
About 37 feet above ground — moderate height, similar to a 3-5 story building.
About 9,576 vehicles cross daily — light traffic, a smooth crossing.
The deck is 70 feet wide with multiple lanes — easy to stay in a center lane.
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
1927
99 years old (rebuilt 2003)
Structure Type
Concrete Arch (Deck)
Total Length
563 ft
171.6 m
Deck Width
70 ft
21.3 m
Spans
7
sections between supports
Max Span
83 ft
longest unsupported section (25.3 m)
Traffic Lanes
4 lanes
Two-way traffic
Clearance Below
37 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
9,576vehicles/day
40.33135°N, 75.89897°W
Concrete Arch (Deck)
A concrete arch bridge uses a curved concrete structure to transfer loads through compression. Concrete arches are durable and can be very aesthetically pleasing.
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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.