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 SAWMILL CREEK
0.09 MI N OF MD 270
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 31,511 vehicles per day and is 89 years old (reconstructed in 1990).
Its sufficiency rating of 77.8 is above the national average of 63.6.
For travelers with bridge anxiety
This bridge is likely to be a comfortable crossing for most travelers.
This bridge is 37 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 31,511 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 114 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
1937
89 years old (rebuilt 1990)
Structure Type
Prestressed Concrete Slab
Total Length
37 ft
11.3 m
Deck Width
114 ft
34.8 m
Spans
1
sections between supports
Max Span
34 ft
longest unsupported section (10.4 m)
Traffic Lanes
4 lanes
Two-way traffic
Daily Traffic
31,511vehicles/day
39.18293°N, 76.61290°W
Prestressed Concrete Slab
A prestressed concrete slab bridge uses a flat concrete deck that has been pretensioned for additional strength. Efficient for short to medium 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.