US Bridges

I-40 over NC18

Good

Burke County, North Carolina · 0.45 MI.E.JCT.SR1924 · Structure no. 000000000230140

Built
2013
12 years old
Condition
Good
inspected October 2021
Type
Stringer/Multi-beam or Girder
Steel
Length
148 ft
1 main span
Daily traffic
25,500
2019 count
Owner
State
State Highway Agency

About this bridge

I-40 over NC18 is a steel stringer/multi-beam or girder carrying I-40 over NC18 in Burke County, North Carolina. It was built in 2013, so it is 12 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 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 25,500 vehicles a day, roughly 16% of them trucks, projected to reach 51,000 by 2040. The structure is 148 ft (45.1 m) long and 115 ft wide.

Location

Open in Google Maps
CarriesI-40
CrossesNC18
Location0.45 MI.E.JCT.SR1924
RouteInterstate 40
CountyBurke County
StateNorth Carolina
Coordinates35.72232, -81.65591
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating68.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length148 ft (45.1 m)
Longest span146 ft (44.5 m)
Deck width115 ft (34.9 m)
Roadway width111 ft (33.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,500 (2019)
Projected traffic51,000 by 2040
Trucks16%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-40 over NC18 built?

It was built in 2013, making it 12 years old in 2025.

What condition is I-40 over NC18 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 October 2021.

How much traffic does I-40 over NC18 carry?

About 25,500 vehicles per day (2019 count), of which roughly 16% are trucks.

How long is I-40 over NC18?

The structure is 148 ft (45.1 m) long with a longest span of 146 ft (44.5 m) and a deck 115 ft wide.

Who owns I-40 over NC18?

It is owned by the State Highway Agency.