US Bridges

NC11 over Lyon Swamp Canal

Fair

Bladen County, North Carolina · 0.3 Mi.S. of JCT.SR1543 · Structure no. 000000000170055

Built
1952
73 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
68 ft
2 main spans
Daily traffic
2,300
2021 count
Owner
State
State Highway Agency

About this bridge

NC11 over Lyon Swamp Canal is a concrete tee beam carrying NC11 over Lyon Swamp Canal in Bladen County, North Carolina. It was built in 1952, so it is 73 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 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 2,300 vehicles a day, roughly 7% of them trucks, projected to reach 4,600 by 2040. The structure is 68 ft (20.7 m) long and 31 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesNC11
CrossesLyon Swamp Canal
Location0.3 Mi.S. of JCT.SR1543
RouteState Highway 11
CountyBladen County
StateNorth Carolina
Coordinates34.43324, -78.22652
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
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
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating36.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length68 ft (20.7 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.5 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2021)
Projected traffic4,600 by 2040
Trucks7%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NC11 over Lyon Swamp Canal built?

It was built in 1952, making it 73 years old in 2025.

What condition is NC11 over Lyon 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 July 2023.

How much traffic does NC11 over Lyon Swamp Canal carry?

About 2,300 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is NC11 over Lyon Swamp Canal?

The structure is 68 ft (20.7 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns NC11 over Lyon Swamp Canal?

It is owned by the State Highway Agency.