US Bridges

SR1160 over Flat Swamp Canal

Fair

Martin County, North Carolina · 0.7 Mi.W. Jct. SR1159 · Structure no. 000000001170226

Built
1996
29 years old
Condition
Fair
inspected February 2024
Type
Culvert
Steel
Length
22 ft
2 main spans
Daily traffic
140
2000 count
Owner
State
State Highway Agency

About this bridge

SR1160 over Flat Swamp Canal is a steel culvert carrying SR1160 over Flat Swamp Canal in Martin County, North Carolina. It was built in 1996, so it is 29 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 140 vehicles a day, roughly 6% of them trucks, projected to reach 280 by 2040. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSR1160
CrossesFlat Swamp Canal
Location0.7 Mi.W. Jct. SR1159
RouteState Highway 1160
CountyMartin County
StateNorth Carolina
Coordinates35.81346, -77.28329
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20 + Mod
Structure length22 ft (6.7 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic140 (2000)
Projected traffic280 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 SR1160 over Flat Swamp Canal built?

It was built in 1996, making it 29 years old in 2025.

What condition is SR1160 over Flat Swamp Canal 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 2024.

How much traffic does SR1160 over Flat Swamp Canal carry?

About 140 vehicles per day (2000 count), of which roughly 6% are trucks.

How long is SR1160 over Flat Swamp Canal?

The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m).

Who owns SR1160 over Flat Swamp Canal?

It is owned by the State Highway Agency.