I-40 over Dirt

GoodClosed to traffic

Forsyth County, North Carolina · 1.6 Mi. W. JCT SR2643 · Structure no. 000000000670724

Built: 2024; 1 years old
Condition: Good; inspected November 2024
Type: Stringer/Multi-beam or Girder; Prestressed Concrete Continuous
Length: 245 ft; 2 main spans
Daily traffic: 65,500; 2022 count
Owner: State; State Highway Agency

About this bridge

I-40 over Dirt is a prestressed concrete continuous stringer/multi-beam or girder carrying I-40 over Dirt in Forsyth County, North Carolina. It was built in 2024, so it is 1 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: closed to all traffic.

It carries about 65,500 vehicles a day, roughly 16% of them trucks, projected to reach 131,000 by 2040. The structure is 245 ft (74.6 m) long and 151 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

No coordinates are recorded for this structure.

CarriesI-40

CrossesDirt

Location1.6 Mi. W. JCT SR2643

RouteState Highway 40

CountyForsyth County

StateNorth Carolina

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.

Component	Rating	Meaning
Deck	8 Very Good	No problems noted.
Superstructure	8 Very Good	No problems noted.
Substructure	9 Excellent	No problems noted.

Last inspectionNovember 2024

Inspection intervalevery 24 months

Operating statusClosed to all traffic

ScourBridge not over waterway

Structural evaluation0: Immediate repair necessary to put back in service

Deck geometry9: Superior to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating0 US tons

Inventory rating0 US tons

Structure

Structure typeStringer/Multi-beam or Girder

MaterialPrestressed Concrete Continuous

DeckConcrete, cast-in-place

Main spans2

Design loadHL 93

Structure length245 ft (74.6 m)

Longest span126 ft (38.4 m)

Deck width151 ft (46.1 m)

Roadway width145 ft (44.3 m)

Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic65,500 (2022)

Projected traffic131,000 by 2040

Trucks16%

Lanes on structure7

Traffic directionTwo-way traffic

CarriesHighway

CrossesOther

Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength

Estimated improvement cost—

NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 over Dirt built?

It was built in 2024, making it 1 years old in 2025.

What condition is I-40 over Dirt 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 November 2024.

How much traffic does I-40 over Dirt carry?

About 65,500 vehicles per day (2022 count), of which roughly 16% are trucks.

How long is I-40 over Dirt?

The structure is 245 ft (74.6 m) long with a longest span of 126 ft (38.4 m) and a deck 151 ft wide.

Who owns I-40 over Dirt?

It is owned by the State Highway Agency.