US Bridges

SR1940 over NC147

Fair

Durham County, North Carolina · 0.2 MI.E.JCT.SR2020 · Structure no. 000000000630194

Built
1969
56 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
275 ft
4 main spans
Daily traffic
3,700
2015 count
Owner
State
State Highway Agency

About this bridge

SR1940 over NC147 is a steel continuous stringer/multi-beam or girder carrying SR1940 over NC147 in Durham County, North Carolina. It was built in 1969, so it is 56 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 3,700 vehicles a day, roughly 7% of them trucks, projected to reach 7,400 by 2040. The structure is 275 ft (83.8 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1940
CrossesNC147
Location0.2 MI.E.JCT.SR2020
RouteState Highway 1940
Coordinates35.95649, -78.86399
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating82.9 US tons
Inventory rating48.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length275 ft (83.8 m)
Longest span94 ft (28.6 m)
Deck width36 ft (11.1 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2015)
Projected traffic7,400 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1940 over NC147 built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR1940 over NC147 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 May 2023.

How much traffic does SR1940 over NC147 carry?

About 3,700 vehicles per day (2015 count), of which roughly 7% are trucks.

How long is SR1940 over NC147?

The structure is 275 ft (83.8 m) long with a longest span of 94 ft (28.6 m) and a deck 36 ft wide.

Who owns SR1940 over NC147?

It is owned by the State Highway Agency.