A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
A bridge's favorite type of music? Heavy metal. Or suspension... it depends.
Crunching the numbers on America's infrastructure...
over BLANCO RIVER & PR 31
3.5 WEST OF NAGUABO
Parametric wireframe generated from real NBI dimensions. Drag to rotate, scroll to zoom.
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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 10,050 vehicles per day and is 28 years old.
Its sufficiency rating of 71.3 is above the national average of 63.6.
The NBI records a navigation clearance of 19 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 has some features that may be challenging for travelers with bridge anxiety. See the tips below for a more comfortable crossing.
This bridge is 1987 feet long — a longer crossing, over 1 minute.
A standard overpass design with solid barriers on each side.
About 19 feet above ground — moderate height, similar to a 3-5 story building.
About 10,050 vehicles cross daily — moderate traffic, some congestion possible.
The deck is 46 feet wide with 2-3 lanes — moderate 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
1998
28 years old
Structure Type
Prestressed Concrete Stringer/Multi-beam/Girder
Total Length
1,987 ft
605.7 m
Deck Width
46 ft
13.9 m
Spans
17
sections between supports
Max Span
127 ft
longest unsupported section (38.6 m)
Traffic Lanes
2 lanes
One-way traffic
Clearance Below
19 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
10,050vehicles/day
18.20969°N, 65.77861°W
Prestressed Concrete Stringer/Multi-beam/Girder
A prestressed concrete stringer bridge uses pretensioned concrete beams, where steel tendons are stretched before concrete is poured. This creates stronger, lighter 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.