Scour Critical Bridges in North Carolina
130 bridges in North Carolina 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 130 bridges in North Carolina have been identified as vulnerable to scour damage.
| Bridge | State | Scour Status | Condition | Year Built | ADT |
|---|---|---|---|---|---|
| FIRST BROAD RIVER | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1962 | 550 |
| BIG LAUREL CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1960 | 500 |
| SOUTH YADKIN RIVER | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1967 | 450 |
| NEUSE RIVER | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1968 | 450 |
| FIFTH CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1969 | 360 |
| CATHEY CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1923 | 320 |
| LITTLE HORSE CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1962 | 250 |
| UT TO LONG CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1976 | 250 |
| VINE SWAMP | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1975 | 250 |
| TICK CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1951 | 230 |
| PAMLICO SOUND | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1994 | 200 |
| FISHING CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1965 | 200 |
| BROAD RIVER | North Carolina | Scour Critical — Countermeasures Installed | Good | 1979 | 150 |
| STONE MOUNTAIN CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1960 | 100 |
| FISHING CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1965 | 100 |
| ARMSTRONG CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1977 | 100 |
| STEELE CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1986 | 100 |
| N.FORK FRENCH BROAD RVR. | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1961 | 100 |
| EAST PRONG ROARING RIVER | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1960 | 100 |
| GOVERNORS CREEK | North Carolina | Scour Critical — Countermeasures Installed | Good | 2020 | 100 |
| CRAB CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 2019 | 90 |
| PINEY FORK CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 2005 | 60 |
| CABIN CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1959 | 60 |
| STONE MOUNTAIN CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1960 | 60 |
| STONE MOUNTAIN CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1960 | 60 |
| BULLHEAD CREEK | North Carolina | Scour Critical — Countermeasures Installed | Good | 1960 | 60 |
| BRUSH CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 2007 | 50 |
| PUPPY CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1960 | 2 |
| ROCKFISH CREEK | North Carolina | Scour Critical — Countermeasures Installed | Poor | 1960 | 1 |
| JUNIPER CREEK | North Carolina | Scour Critical — Countermeasures Installed | Fair | 1960 | 1 |
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.