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
CONOY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 628
PEQUEA CREEK TRIB Pennsylvania Scour Critical — Countermeasures Installed Fair 1976 625
FISHING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1910 624
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 624
CARLEY BROOK Pennsylvania Scour Critical — Countermeasures Installed Fair 1974 623
CHIQUES CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1970 620
LITTLE CONESTOGA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 620
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 620
TEMPLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 610
NEWMYER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1941 610
TRIB. TO COCOLAMUS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1950 610
TWO MILE RUN Pennsylvania Scour Critical — Countermeasures Installed Good 2012 605
UNT Laurel Fork Pennsylvania Scour Critical — Countermeasures Installed Poor 1953 603
IRISH CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1948 600
CENTERVILLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 600
MACOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1928 600
CONOCOCHEAGUE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1961 600
SWAMP CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1860 595
SWAMP CREEK / 2585-J10 Pennsylvania Scour Critical — Countermeasures Installed Fair 1852 595
TUNKHANNOCK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 591
NINEMILE RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 580
SPRING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1969 578
PINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1987 578
OVER LT CONNEAUTTEE CK Pennsylvania Scour Critical — Countermeasures Installed Fair 1956 575
OVER KIANTONE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1957 574
BR OF S BR CALKINS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 573
PLUM CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 571
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 570
LITTLE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1955 562
BIEBER CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1961 557
OVER COOL SPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1952 552
Little Sewickley Creek Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 550
GOODSPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1937 550
YORK RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1931 550
OVER ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1955 549
OVER ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1955 549
MORRIS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1902 544
MARVIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 544
MONROE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1940 542
W.BR.SUSQUEHANNA RIVER Pennsylvania Scour Critical — Countermeasures Installed Poor 1915 540
MOUNTAIN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1935 539
LITTLE BUSHKILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 537
WEST BR MAHANTANGO CRK Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 536
OVER OIL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1956 533
INDIAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1933 529
INDIAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 529
INDIAN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 529
FIELDBROOK CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1941 525
BRANCH OF VALLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 2001 525
LITTLE ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1919 524

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.