US Bridges

SR1139 over Mitchell Swamp

Fair

Robeson County, North Carolina · 0.2 Mi. E. of Jct. SR1140 · Structure no. 000000001550316

Built
1988
37 years old
Condition
Fair
inspected February 2025
Type
Culvert
Steel
Length
40 ft
3 main spans
Daily traffic
200
2017 count
Owner
State
State Highway Agency

About this bridge

SR1139 over Mitchell Swamp is a steel culvert carrying SR1139 over Mitchell Swamp in Robeson County, North Carolina. It was built in 1988, so it is 37 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 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 200 vehicles a day, roughly 6% of them trucks, projected to reach 400 by 2040. The structure is 40 ft (12.1 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR1139
CrossesMitchell Swamp
Location0.2 Mi. E. of Jct. SR1140
RouteState Highway 1139
CountyRobeson County
StateNorth Carolina
Coordinates34.51949, -79.31144
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being 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 rating86 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length40 ft (12.1 m)
Longest span12 ft (3.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2017)
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 SR1139 over Mitchell Swamp built?

It was built in 1988, making it 37 years old in 2025.

What condition is SR1139 over Mitchell 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 February 2025.

How much traffic does SR1139 over Mitchell Swamp carry?

About 200 vehicles per day (2017 count), of which roughly 6% are trucks.

How long is SR1139 over Mitchell Swamp?

The structure is 40 ft (12.1 m) long with a longest span of 12 ft (3.6 m).

Who owns SR1139 over Mitchell Swamp?

It is owned by the State Highway Agency.