Scour Critical Bridges in Missouri
312 bridges in Missouri 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 312 bridges in Missouri have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| PLATTE RVR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1966 | 958 |
| LONG BR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1958 | 940 |
| DOE RUN CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1990 | 935 |
| RUSH CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1920 | 900 |
| LINN CR | Missouri | Scour Critical — Countermeasures Installed | Good | 1967 | 892 |
| DRAIN DTCH #2 | Missouri | Scour Critical — Countermeasures Installed | Fair | 1955 | 867 |
| HONEY CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1969 | 832 |
| HICKORY CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1934 | 772 |
| 3RD FK PLATTE RVR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1929 | 766 |
| BR OF LOCUST CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1929 | 765 |
| W FK BIG CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1954 | 732 |
| BENNETT BAY | Missouri | Scour Critical — Countermeasures Installed | Fair | 1953 | 662 |
| BEAR CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1926 | 630 |
| CHARITON RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1949 | 613 |
| CREEK | Missouri | Scour Critical — Countermeasures Installed | Fair | 1925 | 608 |
| MID FK GRAND RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1961 | 601 |
| 102 RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1962 | 598 |
| LINN CREEK | Missouri | Scour Critical — Countermeasures Installed | Poor | 1936 | 575 |
| RICHLAND CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1988 | 560 |
| WELDON FK OF GRAND | Missouri | Scour Critical — Countermeasures Installed | Fair | 1977 | 555 |
| SNAIL CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1947 | 552 |
| ST FRANCIS RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1959 | 505 |
| ST FRANCIS RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1964 | 505 |
| PANTHER CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1969 | 494 |
| DRY FORK CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1954 | 490 |
| LOUTRE RVR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1960 | 490 |
| BR OF N DRY SAC RV | Missouri | Scour Critical — Countermeasures Installed | Poor | 1900 | 487 |
| BLACKWATER RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1965 | 479 |
| DRY FK FISHING RVR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1917 | 450 |
| S FK MUD CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1959 | 415 |
| GEES CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1960 | 388 |
| SILVER CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1931 | 375 |
| MEDICINE CREEK | Missouri | Scour Critical — Countermeasures Installed | Good | 1947 | 373 |
| MUNCAS CR | Missouri | Scour Critical — Countermeasures Installed | Good | 1984 | 363 |
| 102 RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1961 | 347 |
| ZOUNDS CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1967 | 331 |
| BURRIS CR FK | Missouri | Scour Critical — Countermeasures Installed | Fair | 1966 | 314 |
| BEAR CR | Missouri | Scour Critical — Countermeasures Installed | Good | 1961 | 312 |
| W HONEY CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1932 | 309 |
| MID FK CHARITON RV | Missouri | Scour Critical — Countermeasures Installed | Fair | 1934 | 302 |
| TRIB OF CENTER CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1935 | 300 |
| SANDY CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1920 | 300 |
| SIGHTS BR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1955 | 298 |
| MUDDY CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1960 | 289 |
| LIT MUDDY CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1960 | 289 |
| BIG CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1961 | 273 |
| RUSH CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1946 | 267 |
| CASTOR RVR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1937 | 266 |
| MUDDY CR | Missouri | Scour Critical — Countermeasures Installed | Poor | 1952 | 260 |
| BRIDGE CR | Missouri | Scour Critical — Countermeasures Installed | Fair | 1958 | 256 |
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.