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Scour Critical Bridges in Puerto Rico

496 bridges in Puerto Rico at risk from water erosion around foundations.

Scour Critical Bridges

Scour is the erosion of soil and rock around a bridge's foundation caused by moving water. When foundations are exposed or undermined, a bridge can collapse even if its deck and superstructure are in good condition. Scour is the leading cause of bridge failures in the US. These 496 bridges in Puerto Rico have been identified as vulnerable to scour damage.

Clear
Bridge State Scour Status Condition Year Built ADT
TALLABOA RIVER Puerto Rico Scour Critical — Unaddressed Poor 1968 33,800
HUMACAO RIVER Puerto Rico Scour Critical — Unaddressed Poor 1985 29,200
UTUADO CREEK Puerto Rico Scour Critical — Unaddressed Poor 1965 9,000
RIO AIBONITO Puerto Rico Scour Critical — Unaddressed Poor 2010 8,900
EL JOBO CREEK Puerto Rico Scour Critical — Unaddressed Poor 1940 1,100
TALLABOA RIVER Puerto Rico Scour Critical — Unaddressed Poor 1972 1,000
INABON RIVER Puerto Rico Scour Critical — Unaddressed Poor 2021 900
NUEVE PASOS RIVER Puerto Rico Scour Critical — Unaddressed Poor 1959 600
GUAYANILLA RIVER Puerto Rico Scour Critical — Unaddressed Poor 1977 400
CAGUITAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1964 93,200
GRANDE DE LOIZA RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 2000 78,200
SABALOS CHANNEL Puerto Rico Scour Critical — Countermeasures Installed Fair 1997 64,800
UNNAMED CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1970 56,300
SANTA CATALINA CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1943 55,551
LA PLATA RIVER & PR Puerto Rico Scour Critical — Countermeasures Installed Fair 1985 52,500
IRRIGATION CHANNEL Puerto Rico Scour Critical — Countermeasures Installed Fair 1986 48,600
JUAN GONZALEZ CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1976 48,100
CA¥AS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1953 46,400
CANOVANAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1956 45,200
PIEDRAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1950 44,600
NIGUA RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1971 37,800
MAMEYES RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1982 34,700
IRRIGATION DITCH Puerto Rico Scour Critical — Countermeasures Installed Good 1960 34,600
LA PLATA RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1971 32,850
GRANDE DE ARECIBO RIVER Puerto Rico Scour Critical — Countermeasures Installed Good 1980 30,800
HUMACAO RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1964 30,350
HUMACAO RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1965 30,350
PR 765 & BEATRIZ CRE Puerto Rico Scour Critical — Countermeasures Installed Poor 1972 29,150
PR 765 & BEATRIZ CRE Puerto Rico Scour Critical — Countermeasures Installed Fair 1972 29,150
CAGUITAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1953 28,745
MATADERO CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1925 28,500
PR 328 0.03 KM Puerto Rico Scour Critical — Countermeasures Installed Fair 1974 27,500
INABON RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1970 27,300
INABON RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1970 27,300
PIEDRAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1953 27,100
PIEDRAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1965 27,100
UNKNOWN CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1997 26,800
BAYAMON RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1962 26,400
PIEDRAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1989 24,600
TURABO RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1973 23,300
JACAGUAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1970 22,700
PIEDRAS RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1967 21,250
SABANA RIVER Puerto Rico Scour Critical — Countermeasures Installed Poor 1944 20,500
COCAL RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1945 19,900
CHANNEL Puerto Rico Scour Critical — Countermeasures Installed Poor 1980 19,200
COCAL RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1959 18,900
NIGUA RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1971 18,900
GUADIANA RIVER Puerto Rico Scour Critical — Countermeasures Installed Fair 1958 18,600
GUANABANA CREEK Puerto Rico Scour Critical — Countermeasures Installed Fair 1924 18,500
GUAYANILLA RIVER L ROAD Puerto Rico Scour Critical — Countermeasures Installed Poor 1970 18,450

Scour Critical Rating Codes

Code 2 — UnaddressedBridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures InstalledProtective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures IneffectiveProtective measures were installed but have been assessed as ineffective. The bridge requires re-evaluation and additional action.

About Scour Critical Bridges

Scour critical bridges have been identified through underwater inspection or analysis as having foundations that are unstable or could become unstable during flood conditions. FHWA requires action plans for all scour critical bridges. Famous scour failures include the 1987 Schoharie Creek Bridge collapse in New York.

All Bridges Poor Condition Historic Bridges Bridge Stats