Connecting the data points... literally.
Connecting the data points... literally.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over BUTTERMILK HILL R
2.9 MI E JCT US 9 & SH448
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 3,299 vehicles per day and is 95 years old.
Its sufficiency rating of 46.8 places it below the national average of 63.6.
The NBI records a navigation clearance of 12 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 is likely to be a comfortable crossing for most travelers.
This bridge is 51 feet long — a quick crossing, under 5 seconds at highway speed.
An arch bridge design with some openness to the surroundings.
About 12 feet above ground — standard overpass height.
About 3,299 vehicles cross daily — light traffic, a smooth crossing.
The deck is 56 feet wide with 3-4 lanes — standard width.
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
1931
95 years old
Structure Type
Concrete Arch (Deck)
Total Length
51 ft
15.5 m
Deck Width
56 ft
17.2 m
Spans
1
sections between supports
Max Span
31 ft
longest unsupported section (9.4 m)
Traffic Lanes
2 lanes
Two-way traffic
Clearance Below
12 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
3,299vehicles/day
41.10940°N, 73.82021°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.