US Bridges

SR4325 over I40 BUS/US158/NC42/150

Fair

Forsyth County, North Carolina · 0.5 Mi. S. Jct. US311 · Structure no. 000000000670163

Built
1958
67 years old, rebuilt 2000
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
186 ft
4 main spans
Daily traffic
19,000
2022 count
Owner
State
State Highway Agency

About this bridge

SR4325 over I40 BUS/US158/NC42/150 is a steel stringer/multi-beam or girder carrying SR4325 over I40 BUS/US158/NC42/150 in Forsyth County, North Carolina. It was built in 1958 and reconstructed in 2000, so it is 67 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 19,000 vehicles a day, roughly 7% of them trucks, projected to reach 38,000 by 2040. The structure is 186 ft (56.6 m) long and 82 ft wide.

Location

Open in Google Maps
CarriesSR4325
CrossesI40 BUS/US158/NC42/150
Location0.5 Mi. S. Jct. US311
RouteState Highway 4325
CountyForsyth County
StateNorth Carolina
Coordinates36.09521, -80.22804
Functional classUrban Collector

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating36.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length186 ft (56.6 m)
Longest span58 ft (17.6 m)
Deck width82 ft (24.9 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,000 (2022)
Projected traffic38,000 by 2040
Trucks7%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed—
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR4325 over I40 BUS/US158/NC42/150 built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2000.

What condition is SR4325 over I40 BUS/US158/NC42/150 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 2024.

How much traffic does SR4325 over I40 BUS/US158/NC42/150 carry?

About 19,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is SR4325 over I40 BUS/US158/NC42/150?

The structure is 186 ft (56.6 m) long with a longest span of 58 ft (17.6 m) and a deck 82 ft wide.

Who owns SR4325 over I40 BUS/US158/NC42/150?

It is owned by the State Highway Agency.