US Bridges

NC4 NC48 over Swift Creek

Good

Nash County, North Carolina · 0.3 MI.S.SR1510 · Structure no. 000000001270035

Built
1983
42 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
180 ft
3 main spans
Daily traffic
5,100
2021 count
Owner
State
State Highway Agency

About this bridge

NC4 NC48 over Swift Creek is a steel stringer/multi-beam or girder carrying NC4 NC48 over Swift Creek in Nash County, North Carolina. It was built in 1983, so it is 42 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 5,100 vehicles a day, roughly 7% of them trucks, projected to reach 10,200 by 2040. The structure is 180 ft (54.8 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesNC4 NC48
CrossesSwift Creek
Location0.3 MI.S.SR1510
RouteState Highway 4
Coordinates36.06931, -77.8135
Functional classRural Major 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating61 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.8 m)
Longest span58 ft (17.6 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,100 (2021)
Projected traffic10,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC4 NC48 over Swift Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is NC4 NC48 over Swift Creek 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 August 2023.

How much traffic does NC4 NC48 over Swift Creek carry?

About 5,100 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is NC4 NC48 over Swift Creek?

The structure is 180 ft (54.8 m) long with a longest span of 58 ft (17.6 m) and a deck 33 ft wide.

Who owns NC4 NC48 over Swift Creek?

It is owned by the State Highway Agency.