US Bridges

SR1315 over I40

Good

Wake County, North Carolina · 0.5 Mi. E. Jct. SR1313 · Structure no. 000000001830228

Built
1979
46 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
398 ft
3 main spans
Daily traffic
8,700
2021 count
Owner
State
State Highway Agency

About this bridge

SR1315 over I40 is a steel stringer/multi-beam or girder carrying SR1315 over I40 in Wake County, North Carolina. It was built in 1979, so it is 46 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 8,700 vehicles a day, roughly 7% of them trucks, projected to reach 17,400 by 2040. The structure is 398 ft (121.3 m) long and 69 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1315
CrossesI40
Location0.5 Mi. E. Jct. SR1313
RouteState Highway 1315
CountyWake County
StateNorth Carolina
Coordinates35.77065, -78.73964
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating82.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length398 ft (121.3 m)
Longest span171 ft (52.1 m)
Deck width69 ft (21.1 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,700 (2021)
Projected traffic17,400 by 2040
Trucks7%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed0.6 mi (1 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1315 over I40 built?

It was built in 1979, making it 46 years old in 2025.

What condition is SR1315 over I40 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 September 2023.

How much traffic does SR1315 over I40 carry?

About 8,700 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1315 over I40?

The structure is 398 ft (121.3 m) long with a longest span of 171 ft (52.1 m) and a deck 69 ft wide.

Who owns SR1315 over I40?

It is owned by the State Highway Agency.