Scour Critical Bridges in Vermont
242 bridges in Vermont 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 242 bridges in Vermont have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 250 |
| MUD BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1929 | 250 |
| MUD BROOK | Vermont | Scour Critical — Countermeasures Installed | Poor | 1940 | 250 |
| WILLIAMS RIVER | Vermont | Scour Critical — Countermeasures Installed | Fair | 1919 | 250 |
| COX BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1919 | 250 |
| HALLS STREAM | Vermont | Scour Critical — Countermeasures Installed | Fair | 1931 | 240 |
| LITTLE OTTER CREEK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1967 | 200 |
| NEW HAVEN RIVER | Vermont | Scour Critical — Countermeasures Installed | Fair | 1927 | 200 |
| MIDDLEBURY RIVER | Vermont | Scour Critical — Countermeasures Installed | Fair | 1936 | 200 |
| SO. PEACHAM BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1948 | 200 |
| JENKINS BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1931 | 200 |
| FIRST BRANCH WHITE R. | Vermont | Scour Critical — Countermeasures Installed | Fair | 1921 | 200 |
| PEACH BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1953 | 200 |
| ABBOTT BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1919 | 200 |
| WAITS RIVER | Vermont | Scour Critical — Countermeasures Installed | Good | 1919 | 200 |
| RIDLEY BROOK | Vermont | Scour Critical — Countermeasures Installed | Poor | 1967 | 200 |
| UNION BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1949 | 200 |
| BLACK RIVER | Vermont | Scour Critical — Countermeasures Installed | Good | 1980 | 165 |
| CALENDAR BROOK | Vermont | Scour Critical — Countermeasures Installed | Poor | 1926 | 150 |
| STANNARD BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1963 | 150 |
| SCOTT BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1928 | 150 |
| HALLS BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1976 | 150 |
| THAYER BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 150 |
| RUSSELL BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1939 | 150 |
| FREEMAN BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1973 | 150 |
| SARGENT BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1974 | 150 |
| UNION BROOK | Vermont | Scour Critical — Countermeasures Installed | Poor | 1970 | 150 |
| ANDOVER BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1962 | 150 |
| MILL BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1947 | 150 |
| BALL MTN. BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1982 | 140 |
| STEVENS RIVER | Vermont | Scour Critical — Countermeasures Installed | Poor | 1919 | 125 |
| BROAD BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1929 | 125 |
| E.BR.DEAD CREEK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1949 | 100 |
| HANCOCK BR. WHITE R. | Vermont | Scour Critical — Countermeasures Installed | Good | 1935 | 100 |
| MIDDLEBURY RIVER | Vermont | Scour Critical — Countermeasures Installed | Good | 1972 | 100 |
| PEACHAM HOLLOW BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 100 |
| ROUNDY BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 100 |
| WINHALL RIVER | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 100 |
| MOOSE RIVER | Vermont | Scour Critical — Countermeasures Installed | Fair | 1940 | 100 |
| BLACK CREEK | Vermont | Scour Critical — Countermeasures Installed | Poor | 1903 | 100 |
| MOSS GLEN BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1982 | 100 |
| HALLS BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1929 | 100 |
| SNOWS BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1923 | 100 |
| THAYER BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1928 | 100 |
| CORPORATION BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1930 | 100 |
| BEAVER BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1954 | 100 |
| MILL BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1895 | 100 |
| CHASE BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1978 | 100 |
| GILEAD BROOK | Vermont | Scour Critical — Countermeasures Installed | Good | 1989 | 84 |
| COOK BROOK | Vermont | Scour Critical — Countermeasures Installed | Fair | 1931 | 80 |
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.