US Bridges

SR1508 over Acre Swamp

Good

Beaufort County, North Carolina · 1.2 Mi. N. Jct. SR1530 · Structure no. 000000000130149

Built
2018
7 years old
Condition
Good
inspected September 2024
Type
Slab
Prestressed Concrete
Length
103 ft
3 main spans
Daily traffic
550
2021 count
Owner
State
State Highway Agency

About this bridge

SR1508 over Acre Swamp is a prestressed concrete slab carrying SR1508 over Acre Swamp in Beaufort County, North Carolina. It was built in 2018, so it is 7 years old, younger 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 550 vehicles a day, roughly 6% of them trucks, projected to reach 1,100 by 2040. The structure is 103 ft (31.3 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesSR1508
CrossesAcre Swamp
Location1.2 Mi. N. Jct. SR1530
RouteState Highway 1508
Coordinates35.62679, -76.85415
Functional classRural Minor 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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.9 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHL 93
Structure length103 ft (31.3 m)
Longest span39 ft (11.8 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic550 (2021)
Projected traffic1,100 by 2040
Trucks6%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was SR1508 over Acre Swamp built?

It was built in 2018, making it 7 years old in 2025.

What condition is SR1508 over Acre Swamp 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 September 2024.

How much traffic does SR1508 over Acre Swamp carry?

About 550 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is SR1508 over Acre Swamp?

The structure is 103 ft (31.3 m) long with a longest span of 39 ft (11.8 m) and a deck 33 ft wide.

Who owns SR1508 over Acre Swamp?

It is owned by the State Highway Agency.