US Bridges

I40W over I40S NC147 Ramp

Fair

Durham County, North Carolina · 0.5 MI.E.JCT.SR2028 · Structure no. 000000000630297

Built
1985
40 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
181 ft
3 main spans
Daily traffic
40,750
2021 count
Owner
State
State Highway Agency

About this bridge

I40W over I40S NC147 Ramp is a steel stringer/multi-beam or girder carrying I40W over I40S NC147 Ramp in Durham County, North Carolina. It was built in 1985, so it is 40 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 6 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 40,750 vehicles a day, roughly 16% of them trucks, projected to reach 81,500 by 2040. The structure is 181 ft (55.1 m) long and 59 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI40W
CrossesI40S NC147 Ramp
Location0.5 MI.E.JCT.SR2028
RouteInterstate 40
CountyDurham County
StateNorth Carolina
Coordinates35.89972, -78.87105
Functional classUrban 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating64.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length181 ft (55.1 m)
Longest span91 ft (27.7 m)
Deck width59 ft (17.9 m)
Roadway width56 ft (17 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,750 (2021)
Projected traffic81,500 by 2040
Trucks16%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40W over I40S NC147 Ramp built?

It was built in 1985, making it 40 years old in 2025.

What condition is I40W over I40S NC147 Ramp 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 August 2023.

How much traffic does I40W over I40S NC147 Ramp carry?

About 40,750 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I40W over I40S NC147 Ramp?

The structure is 181 ft (55.1 m) long with a longest span of 91 ft (27.7 m) and a deck 59 ft wide.

Who owns I40W over I40S NC147 Ramp?

It is owned by the State Highway Agency.