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.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| LICKING CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1935 | 3,124 |
| HUNLOCK CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1925 | 3,114 |
| WEST BR.CHESTER CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1973 | 3,108 |
| BEAVER RIVER | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1905 | 3,051 |
| LAUREL CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1934 | 3,032 |
| TROUT CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1933 | 3,029 |
| UNAMI CREEK / 2806-E4 | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1890 | 3,005 |
| SHOVELSBURG RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1938 | 3,004 |
| MEADOW BROOK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1931 | 3,000 |
| LETORT SPRING RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1978 | 3,000 |
| LITTLE SCHUYLKILL RIVER | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1893 | 3,000 |
| SWAMP CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1939 | 3,000 |
| WEBB CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1962 | 2,997 |
| FRENCH CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1856 | 2,994 |
| SKIPPACK CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1908 | 2,965 |
| LITTLE NESHAMINY CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1959 | 2,952 |
| CHAMPION CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1942 | 2,947 |
| ELDER RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1952 | 2,942 |
| SWAMP BROOK CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1958 | 2,932 |
| HAZLE CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1961 | 2,928 |
| PINE CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1915 | 2,927 |
| CHERRY CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1929 | 2,917 |
| PINE CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1929 | 2,917 |
| EAST BRANCH RED CLAY CR. | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1923 | 2,912 |
| OVER INLET CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1934 | 2,904 |
| VALLEY CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1912 | 2,897 |
| BUCK RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1926 | 2,896 |
| TRIB TO PENNS CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1934 | 2,889 |
| HOSENSACK CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1933 | 2,882 |
| BEAVER DAM RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1953 | 2,830 |
| SANDY CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1950 | 2,818 |
| LABORDE BRANCH SANDY CR | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1950 | 2,818 |
| BRANCH BRANDYWINE CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1935 | 2,802 |
| TRIB LITTLE SWATARA CK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1934 | 2,801 |
| SHAMONA CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1965 | 2,800 |
| MORGAN CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1922 | 2,800 |
| OVER SPRUCE RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1948 | 2,792 |
| OVER LITTLE SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1985 | 2,773 |
| OVER LITTLE SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1985 | 2,773 |
| BUCK RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1929 | 2,763 |
| SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1919 | 2,748 |
| SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1923 | 2,748 |
| SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1919 | 2,748 |
| SUGAR CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1923 | 2,748 |
| LITTLE ANDERSON CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1921 | 2,732 |
| GLADDENS RUN | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1927 | 2,723 |
| TRIB OF E BR CODORUS CR | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1941 | 2,695 |
| OVER MARSH CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Fair | 1925 | 2,670 |
| MAHANTANGO CREEK | Pennsylvania | Scour Critical — Countermeasures Installed | Good | 1930 | 2,660 |
| LACKAWANNA RIVER | Pennsylvania | Scour Critical — Countermeasures Installed | Poor | 1961 | 2,658 |
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.