Crunching the numbers on America's infrastructure...
Crunching the numbers on America's infrastructure...
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over Swatara Cr. & T-496
W. of Toll House Rd. Int.
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 24,423 vehicles per day and is 10 years old.
Its sufficiency rating of 75.5 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 612 feet long — a short crossing, about 10-15 seconds.
A standard overpass design with solid barriers on each side.
About 16 feet above ground — standard overpass height.
About 24,423 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 125 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
2016
10 years old
Structure Type
Steel (Continuous) Stringer/Multi-beam/Girder
Total Length
612 ft
186.5 m
Deck Width
125 ft
38.2 m
Spans
4
sections between supports
Max Span
170 ft
longest unsupported section (51.8 m)
Traffic Lanes
4 lanes
Two-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
24,423vehicles/day
40.20987°N, 76.71709°W
Steel (Continuous) Stringer/Multi-beam/Girder
A steel stringer bridge uses parallel steel beams (stringers) to support the deck. This is one of the most common bridge types in the US, valued for its simplicity and strength.
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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.