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Pr 378 5.1 Km over Guayanilla River

Guayanilla Municipio, Puerto Rico · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Pr 378 5.1 Km over Guayanilla River in Guayanilla Municipio, Puerto Rico, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
It was built in 1954, making it 71 years old at the 2025 inventory.
It carries about 400 vehicles a day (traffic count year 2017).
Its listed owner is the state highway agency.
It is one of 26 of the 36 inventoried bridges in Guayanilla Municipio rated fair (72.2%); 8 (22.2%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the Puerto Rico department of transportation.

Bridge	Built	Vehicles/day	Condition
Pr 2 over Waterway	1970	36,900	Fair
Pr 2 over Pr 377	2003	36,900	Fair
Pr 2 Esbd Km 204.4 over Guayanilla River L Road	1970	18,450	Poor
Pr 2 Westbound over Guayanilla River L Road	1970	18,450	Fair
Pr 2 Eastbound over Waterway	1968	16,650	Fair
Pr 2 Wbd Km 209.1 over Waterway	1968	16,650	Fair