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
LITTLE COCALICO CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1950	105
STONY FORK CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1935	105
TR.OF HINCKSTON RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1910	103
FOX RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1918	103
DOE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1914	103
INDIAN RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1919	103
Otter Creek Tributary	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1958	102
MIDDLE CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1962	102
HUNTINGTON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1970	101
NOCKAMIXON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1826	100
POQUESSING CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1845	100
BRANCH OF NESHAMINY CR	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1948	100
MORRIS RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1911	100
ROBIN RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1927	100
TRIB. MEHOOPANY CK	Pennsylvania	Scour Critical — Countermeasures Installed	Good	1912	100
COOKS CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1873	100
TINICUM CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1872	100
Butter Creek	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1933	100
LITTLE BUFFALO RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1913	100
LARDINTOWN RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1930	100
LITTL CONNOQUENESSING CR	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1916	100
BEAR CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1992	100
HOGUE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1903	100
HINCKSTON RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1978	100
OVER CALDWELL CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1940	100
Poquessing Creek	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1853	100
POWELL CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1974	100
TRIB FOURMILE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1975	100
TRIB. TO RIDLEY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1972	100
CROW RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1960	100
LITTLE SANDY CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1898	100
BACK CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1980	100
MILL RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1918	100
GEORGES RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1984	100
PATTERSON CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1914	100
ROBERTS RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1926	100
ROBERTS RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1910	100
YELLOW CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1978	100
NORTH BR BERMUDIAN CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1966	100
CHOCONUT CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1900	100
FOUR MILE RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1919	100
SINNEMAHONING CRK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1955	100
NORTH RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1945	100
DEEP CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1922	100
Sewickley Creek	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1936	100
TREXLER RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1989	100
BALD EAGLE CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1992	100
BEAVER RUN	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1920	100
LIZARD CREEK	Pennsylvania	Scour Critical — Countermeasures Installed	Fair	1971	100
OVER TUSCARORA CR.	Pennsylvania	Scour Critical — Countermeasures Installed	Poor	1940	100

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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