Scour Critical Bridges in Pennsylvania

2,233 bridges in Pennsylvania 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 2,233 bridges in Pennsylvania have been identified as vulnerable to scour damage.

Clear

Bridge	State	Scour Status	Condition	Year Built	ADT
BACK CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1950	150
PIGEON CREEK trib	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1903	150
GARLAND RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1986	150
GLOBE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1972	150
FOUR MILE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1950	150
FALLS CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1987	150
Nancy Run	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	2000	150
W BR TUNUNGWANT CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1955	150
GLADDENS RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1912	150
POHOPOCO CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1980	150
FOUR MILE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1920	150
OUGHOUGHTON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1937	150
HOKENDAUQUA CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1911	150
JACOBY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1984	150
ALLEGHENY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1946	150
LITTLE MARTINS CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1965	150
OVER MUDDY RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1949	150
DEEP CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1940	150
DEEP CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1930	150
DEEP CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1922	150
LOW. LIT. SWATARA CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1932	150
LOCUST CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1935	150
PINE CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1935	150
LIZARD CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1930	150
MUDDY RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1941	149
CODER RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1984	149
BENNETT BRANCH	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1900	148
PAUNNACUSSING CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1884	147
BRANCH OF TOHICKON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1931	146
BR APOLACON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1953	145
APPENZELL CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1915	145
WOLF CAMP RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1965	144
WEST BR LACKAWAXEN RIVER	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1934	144
CALLEN RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1915	144
PATTERSON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1933	143
S BR OF TWO LICK CR	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1934	142
TULPEHOCKEN CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1900	141
BRANCH VALLEY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1913	140
LITTLE CLEARFIELD CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1937	140
CAMPBELL RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1977	140
CHERRY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1977	140
OVER LOWER SHERIFF RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1917	139
OVER BUSH CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1963	139
MCMICHAEL CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1954	139
OVER LITTLE ROARING CR.	Pennsylvania	Scour Critical — Countermeasures Installed	Good	1940	139
TRIB AT S BR CALKINS CR	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1953	138
LINN RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1936	135
POCOPSON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1914	135
W BR SUSQUEHANNA RIVER	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1873	135
Shenango River Tributary	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1957	135

Scour Critical Rating Codes

Code 2 — Unaddressed	Bridge is scour critical with no countermeasures installed. The foundation is vulnerable and no protective action has been taken.
Code 3 — Countermeasures Installed	Protective measures (riprap, sheet piling, etc.) have been installed to reduce scour risk, but the bridge remains classified as scour critical.
Code 6 — Countermeasures Ineffective	Protective 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.

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