US Bridges

SR1103 over Lyon Swamp Canal

Good

Pender County, North Carolina · 1 MI.S.JCT.SR1104 · Structure no. 000000001410017

Built
1999
26 years old
Condition
Good
inspected October 2024
Type
Slab
Prestressed Concrete
Length
107 ft
3 main spans
Daily traffic
200
2022 count
Owner
State
State Highway Agency

About this bridge

SR1103 over Lyon Swamp Canal is a prestressed concrete slab carrying SR1103 over Lyon Swamp Canal in Pender County, North Carolina. It was built in 1999, so it is 26 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, roughly 6% of them trucks, projected to reach 400 by 2040. The structure is 107 ft (32.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesSR1103
CrossesLyon Swamp Canal
Location1 MI.S.JCT.SR1104
RouteState Highway 1103
Coordinates34.39182, -78.14865
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length107 ft (32.6 m)
Longest span34 ft (10.3 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.2 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 closed1.9 mi (3 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 SR1103 over Lyon Swamp Canal built?

It was built in 1999, making it 26 years old in 2025.

What condition is SR1103 over Lyon Swamp Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does SR1103 over Lyon Swamp Canal carry?

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

How long is SR1103 over Lyon Swamp Canal?

The structure is 107 ft (32.6 m) long with a longest span of 34 ft (10.3 m) and a deck 27 ft wide.

Who owns SR1103 over Lyon Swamp Canal?

It is owned by the State Highway Agency.