US Bridges

I40 Wbl over SR1510

Fair

Iredell County, North Carolina · 0.6 Mi. W. Jct. SR1005 · Structure no. 000000000970073

Built
1955
70 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
120 ft
3 main spans
Daily traffic
18,750
2020 count
Owner
State
State Highway Agency

About this bridge

I40 Wbl over SR1510 is a steel stringer/multi-beam or girder carrying I40 Wbl over SR1510 in Iredell County, North Carolina. It was built in 1955, so it is 70 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 fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 18,750 vehicles a day, roughly 23% of them trucks, projected to reach 37,500 by 2040. The structure is 120 ft (36.5 m) long and 33 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40 Wbl
CrossesSR1510
Location0.6 Mi. W. Jct. SR1005
RouteInterstate 40
CountyIredell County
StateNorth Carolina
Coordinates35.76948, -81.00689
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating35.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length120 ft (36.5 m)
Longest span39 ft (11.8 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,750 (2020)
Projected traffic37,500 by 2040
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 Wbl over SR1510 built?

It was built in 1955, making it 70 years old in 2025.

What condition is I40 Wbl over SR1510 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does I40 Wbl over SR1510 carry?

About 18,750 vehicles per day (2020 count), of which roughly 23% are trucks.

How long is I40 Wbl over SR1510?

The structure is 120 ft (36.5 m) long with a longest span of 39 ft (11.8 m) and a deck 33 ft wide.

Who owns I40 Wbl over SR1510?

It is owned by the State Highway Agency.