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Pr 181 over Grande De Loiza River

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

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

Pr 181 over Grande De Loiza River in San Lorenzo 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 deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1955, making it 70 years old at the 2025 inventory.
It carries about 8,700 vehicles a day (traffic count year 2017).
Its listed owner is the state highway agency.
It is one of 34 of the 51 inventoried bridges in San Lorenzo Municipio rated fair (66.7%); 10 (19.6%) 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


Structure	Continuous concrete tee beam
Length	about 230 ft
Location	2 Km North of San Lorenzo
NBI structure number	007411
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Pr 203 5.8 Km over GDE. DE LOIZA RV.&PR	1998	17,900	Fair
Pr 183 over Los Puercos Creek	2000	17,080	Good
Pr 9931 0.6 Km over Creek	1945	11,900	Fair
Off Pr 183 12.7 Km over Unnamed Creek	1999	10,300	Fair
Pr 183 8.1 Km over Hato Creek	1925	10,000	Fair
Pr 916 3.5 Km over Quebrada Grande Creek	2003	9,200	Good