US Bridges

NC147 Nbl over Bacon Street

Fair

Durham County, North Carolina · 0.4 MI.S.JCT.NC55 · Structure no. 000000000630180

Built
1970
55 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
114 ft
3 main spans
Daily traffic
73,500
2021 count
Owner
State
State Highway Agency

About this bridge

NC147 Nbl over Bacon Street is a steel stringer/multi-beam or girder carrying NC147 Nbl over Bacon Street in Durham County, North Carolina. It was built in 1970, so it is 55 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 73,500 vehicles a day, roughly 12% of them trucks, projected to reach 147,000 by 2040. The structure is 114 ft (34.7 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesNC147 Nbl
CrossesBacon Street
Location0.4 MI.S.JCT.NC55
RouteState Highway 147
Coordinates35.97936, -78.88303
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating74 US tons
Inventory rating45 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length114 ft (34.7 m)
Longest span63 ft (19.2 m)
Deck width44 ft (13.4 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73,500 (2021)
Projected traffic147,000 by 2040
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes

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 NC147 Nbl over Bacon Street built?

It was built in 1970, making it 55 years old in 2025.

What condition is NC147 Nbl over Bacon Street 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 April 2023.

How much traffic does NC147 Nbl over Bacon Street carry?

About 73,500 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is NC147 Nbl over Bacon Street?

The structure is 114 ft (34.7 m) long with a longest span of 63 ft (19.2 m) and a deck 44 ft wide.

Who owns NC147 Nbl over Bacon Street?

It is owned by the State Highway Agency.