The average US bridge is 48 years old. That's a lot of birthday candles.
The average US bridge is 48 years old. That's a lot of birthday candles.
Fun fact: Covered bridges were roofed to protect the wood, not the travelers.
over Mill Slough
US-441 EB - Mill Slough
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This bridge has a Fair overall condition rating of 6 out of 9. While it is not classified as structurally deficient, it shows some deterioration that is being monitored.
The bridge carries 26,000 vehicles per day and is 61 years old (reconstructed in 2003).
Its sufficiency rating of 68.1 is above 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 152 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 26,000 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 63 feet wide with 3-4 lanes — standard width.
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
1965
61 years old (rebuilt 2003)
Structure Type
Concrete Slab
Total Length
152 ft
46.3 m
Deck Width
63 ft
19.2 m
Spans
5
sections between supports
Max Span
30 ft
longest unsupported section (9.1 m)
Traffic Lanes
3 lanes
One-way traffic
Daily Traffic
26,000vehicles/day
28.30410°N, 81.38567°W
Concrete Slab
A concrete slab bridge is a simple, solid concrete deck that acts as both the structural support and driving surface. Common for short spans, they are durable and low-maintenance.
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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.