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 BLAIR GAP RUN
DUNCANSVILLE 16TH STREET
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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This bridge has a Poor overall condition rating of 4 out of 9. This bridge is classified as being in poor condition, meaning one or more structural components have significant deterioration. Poor condition does not mean the bridge is unsafe to drive on, but it does mean repairs or replacement may be needed.
The bridge carries 1,514 vehicles per day and is 101 years old.
Its sufficiency rating of 50.1 places it below 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 30 feet long — a quick crossing, under 5 seconds at highway speed.
A standard overpass design with solid barriers on each side.
No height data available — likely a standard overpass height.
About 1,514 vehicles cross daily — light traffic, a smooth crossing.
The deck is 26 feet wide with 1-2 lanes — a narrower 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
1925
101 years old
Structure Type
Concrete Tee Beam
Total Length
30 ft
9.1 m
Deck Width
26 ft
7.9 m
Spans
1
sections between supports
Max Span
29 ft
longest unsupported section (8.8 m)
Traffic Lanes
2 lanes
Two-way traffic
Daily Traffic
1,514vehicles/day
40.42070°N, 78.43798°W
Concrete Tee Beam
A concrete tee beam bridge uses T-shaped cross-section beams where the top flange serves as part of the deck, efficiently using concrete in both compression and tension.
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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.