US Bridges

SR1108 over Grissett Swamp

Fair

Columbus County, North Carolina · 0.7 Mi.N. of JCT.NC904 · Structure no. 000000000470064

Built
1982
43 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete Continuous
Length
50 ft
4 main spans
Daily traffic
550
2020 count
Owner
State
State Highway Agency

About this bridge

SR1108 over Grissett Swamp is a concrete continuous culvert carrying SR1108 over Grissett Swamp in Columbus County, North Carolina. It was built in 1982, so it is 43 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 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 550 vehicles a day, roughly 6% of them trucks, projected to reach 1,100 by 2040. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesSR1108
CrossesGrissett Swamp
Location0.7 Mi.N. of JCT.NC904
RouteState Highway 1108
CountyColumbus County
StateNorth Carolina
Coordinates34.07067, -78.68744
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 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 rating47 US tons
Inventory rating35.9 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20 + Mod
Structure length50 ft (15.2 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 traffic550 (2020)
Projected traffic1,100 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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 SR1108 over Grissett Swamp built?

It was built in 1982, making it 43 years old in 2025.

What condition is SR1108 over Grissett 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 April 2024.

How much traffic does SR1108 over Grissett Swamp carry?

About 550 vehicles per day (2020 count), of which roughly 6% are trucks.

How long is SR1108 over Grissett Swamp?

The structure is 50 ft (15.2 m) long with a longest span of 12 ft (3.6 m).

Who owns SR1108 over Grissett Swamp?

It is owned by the State Highway Agency.