US Bridges

US401 over Flatrock Creek

Good

Franklin County, North Carolina · 1.0MI S. of JCT SR1401 · Structure no. 000000000690158

Built
1960
65 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
25 ft
3 main spans
Daily traffic
2,000
2019 count
Owner
State
State Highway Agency

About this bridge

US401 over Flatrock Creek is a concrete continuous culvert carrying US401 over Flatrock Creek in Franklin County, North Carolina. It was built in 1960, so it is 65 years old, older than the North Carolina average of 38.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,000 vehicles a day, roughly 7% of them trucks, projected to reach 4,000 by 2040. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 8.7 mi (14 km).

CarriesUS401
CrossesFlatrock Creek
Location1.0MI S. of JCT SR1401
RouteU.S. Route 401
Coordinates36.21226, -78.27313
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length25 ft (7.6 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,000 (2019)
Projected traffic4,000 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US401 over Flatrock Creek built?

It was built in 1960, making it 65 years old in 2025.

What condition is US401 over Flatrock Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does US401 over Flatrock Creek carry?

About 2,000 vehicles per day (2019 count), of which roughly 7% are trucks.

How long is US401 over Flatrock Creek?

The structure is 25 ft (7.6 m) long with a longest span of 8 ft (2.4 m).

Who owns US401 over Flatrock Creek?

It is owned by the State Highway Agency.