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Bridge conditions in San Juan Municipio, Puerto Rico

201 inventoried bridges · 21 rated poor · 2025 National Bridge Inventory

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

San Juan Municipio has 21 bridges rated poor out of 201 inventoried, a 10.4% share that puts it well above the national rate of about 7%.

21 of the 201 bridges in San Juan Municipio, Puerto Rico, are rated in poor condition (10.4%) in the 2025 National Bridge Inventory, as of August 20, 2026.
42 bridges (20.9%) are rated good and 138 (68.7%) fair.
The median San Juan Municipio bridge was built in 1977.
The busiest poor-rated bridge is Pr 18 3.35 Km over Ave. Amer Miranda 1.4 Km (built 1967), carrying about 261,400 vehicles a day.

Good 20.9% · Fair 68.7% · Poor 10.4% of 201 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Pr 18 3.35 Km over Ave. Amer Miranda 1.4 Km	1967	261,400	Poor
Pr 18 1.00 Km over Pr 23 2.50 Km	1967	183,900	Poor
Pr 18 0.65 Km over Chardon Street	1972	183,900	Poor
Pr 18 2.6 Km over Pr 17 4.0 Km	1967	183,800	Poor
Pr 52 Southbound over Pr 177 8.4 Km	1979	76,650	Poor
Pr 1 over Pr 18 (las Americas Exp)	1977	45,500	Poor
Pr 1 15.1 Km over Pr 52	1977	45,500	Poor
Pr 1 15.1 Km over Pr 52 0.15 Km	1976	45,500	Poor
Ramp Pr 2 to Pr 1 over Pr 2	1966	38,250	Poor
Pr 25 8.0 Km over Martin PE¥A Channel	1939	28,800	Poor
Pr 177 7.15 Km over Pr 1 16.35 Km	1976	27,600	Poor
Pr 176 over Piedras River	1953	27,100	Poor
Pr 1 15.7 Km over San Roberto Street	1967	22,750	Poor
Pr 1 15.4 Km over San Roberto Street	1967	22,750	Poor
Pr 37 0.9 Km over Pr 26 0.1 Km	1979	20,500	Poor
Ramp Pr 1 to Pr 22 over Ramp Marginal St to Pr 1	1979	13,599	Poor
PR18 PR17 10.1 Km over Piedras River	1967	11,200	Poor
Ntre Dme St 0.1 Km over Piedras River	1965	11,200	Poor
Pr 873 0.7 Km over Frailes Creek	1855	9,900	Poor
Pr 176 10.4 Km over Chorros Creek	1940	4,000	Poor
Pr 176 6.1 Km over Las CURÍAS Creek	1936	4,000	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Pr 18 3.35 Km over Ave. Amer Miranda 1.4 Km	1967	261,400	Poor
Pr 18 2.1 Km over Piedras River	1967	261,000	Fair
Ramp PR18 0.02 Km over Pr 18 NB Pr 22 WB Km 2	2007	239,000	Fair
Rmp 18 SB 21 WB over Ramp Pr-21 Centro Medico	2018	239,000	Good
Pr-18 over Pr-21	2020	239,000	Good
Pr 22 0.7 Km over Pr 35 2.4 Km	1976	201,100	Fair
Pr 22 Pr 18 .1 Km over Los Muertos Creek	1975	196,173	Fair
Pr 22 Westbound over Piedras River	1975	196,100	Fair
Pr 22 Eastbound over Piedras River	1975	196,100	Fair
Pr 2 Pr 22 4.3 Km over Ramp Pr 28 Pr 2 4.7 Km	2000	196,100	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Puerto Rico: Puerto Rico bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.