US Bridges

I40 Ramp over S. Buffalo Creek

Good

Guilford County, North Carolina · 0.1 Mi. W. Jct. SR4121 · Structure no. 000000000810310

Built
1976
49 years old
Condition
Good
inspected July 2024
Type
Culvert
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

I40 Ramp over S. Buffalo Creek is a concrete continuous culvert carrying I40 Ramp over S. Buffalo Creek in Guilford County, North Carolina. It was built in 1976, so it is 49 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 2,500 vehicles a day, roughly 16% of them trucks, projected to reach 5,000 by 2040. The structure is 45 ft (13.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI40 Ramp
CrossesS. Buffalo Creek
Location0.1 Mi. W. Jct. SR4121
RouteInterstate 40
Coordinates36.04536, -79.84077
Functional classUrban Principal Arterial - Interstate

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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
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 length45 ft (13.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic5,000 by 2040
Trucks16%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I40 Ramp over S. Buffalo Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is I40 Ramp over S. Buffalo 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 July 2024.

How much traffic does I40 Ramp over S. Buffalo Creek carry?

About 2,500 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I40 Ramp over S. Buffalo Creek?

The structure is 45 ft (13.7 m) long with a longest span of 10 ft (3 m).

Who owns I40 Ramp over S. Buffalo Creek?

It is owned by the State Highway Agency.