US Bridges

SR1424 over Big Swamp

Fair

Beaufort County, North Carolina · 0.1 MI N. of JCT SR 1515 · Structure no. 000000000130098

Built
1994
31 years old
Condition
Fair
inspected July 2024
Type
Slab
Prestressed Concrete
Length
90 ft
2 main spans
Daily traffic
200
2022 count
Owner
State
State Highway Agency

About this bridge

SR1424 over Big Swamp is a prestressed concrete slab carrying SR1424 over Big Swamp in Beaufort County, North Carolina. It was built in 1994, so it is 31 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 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 200 vehicles a day, roughly 6% of them trucks, projected to reach 400 by 2040. The structure is 90 ft (27.4 m) long and 27 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR1424
CrossesBig Swamp
Location0.1 MI N. of JCT SR 1515
RouteState Highway 1424
CountyBeaufort County
StateNorth Carolina
Coordinates35.64844, -77.00906
Functional classRural 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating62.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20 + Mod
Structure length90 ft (27.4 m)
Longest span43 ft (13.1 m)
Deck width27 ft (8.2 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2022)
Projected traffic400 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 SR1424 over Big Swamp built?

It was built in 1994, making it 31 years old in 2025.

What condition is SR1424 over Big Swamp 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 July 2024.

How much traffic does SR1424 over Big Swamp carry?

About 200 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1424 over Big Swamp?

The structure is 90 ft (27.4 m) long with a longest span of 43 ft (13.1 m) and a deck 27 ft wide.

Who owns SR1424 over Big Swamp?

It is owned by the State Highway Agency.