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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
SILVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1937 2,200
TOBY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1989 2,171
MUCKINIPATTIS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 2,166
BULGERS RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1956 2,165
SWAMP CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1966 2,159
BORGER CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1930 2,158
CEDAR CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1953 2,148
OVER MUD RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1952 2,144
BIG RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1931 2,136
TRIB.TO SUSQUEHANNA RIVE Pennsylvania Scour Critical — Countermeasures Installed Fair 1932 2,120
COAL LICK RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1900 2,100
TRIB.TO SPRING CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 2,087
KRATZER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1926 2,084
BODINES RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1936 2,080
CANAWACTA CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1925 2,079
GREEN CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 2,079
NESCOPECK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1958 2,077
NORTH FORK OF BENS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1922 2,072
CONOY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1940 2,070
ELK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1958 2,068
MILL CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1951 2,064
TRIB WEST BR TOMJACK CRK Pennsylvania Scour Critical — Countermeasures Installed Fair 1900 2,064
WEST BRANCH TOMJACK CRK Pennsylvania Scour Critical — Countermeasures Installed Fair 1950 2,064
TRIB. ONTELAUNEE CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1926 2,062
LITTLE MUNCY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1949 2,058
IRON HOLLOW RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1921 2,049
BROAD RUN CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1931 2,049
OVER DELMATER RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1917 2,040
BRUBAKER RUN Pennsylvania Scour Critical — Countermeasures Installed Good 2004 2,035
TRIB. TO HOSENSACK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1934 2,035
YELLOW BREECHES CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1938 2,031
SWATARA CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1933 2,019
BIG SEWICKLEY CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1827 2,000
Trout Creek Pennsylvania Scour Critical — Countermeasures Installed Fair 1999 2,000
MARSH RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 2,000
LETORT SPRING RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1983 2,000
HAYMAKER RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1988 2,000
IRONWORKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Good 1966 1,999
THOMPSON RUN Pennsylvania Scour Critical — Countermeasures Installed Poor 1906 1,997
MARSH CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1939 1,995
BEAVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1916 1,979
SALT LICK CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1978 1,975
TRIB. TO LYON CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1930 1,946
APPENZELL CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1954 1,943
COOKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1924 1,932
BRANCH COOKS CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1927 1,932
MARSH RUN Pennsylvania Scour Critical — Countermeasures Installed Fair 1961 1,900
MOUNTS CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1920 1,900
SILVER CREEK Pennsylvania Scour Critical — Countermeasures Installed Fair 1920 1,900
W. BR. BRANDYWINE CREEK Pennsylvania Scour Critical — Countermeasures Installed Poor 1926 1,897

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