US Bridges

SR1345 over Royal Oak Swamp

Fair

Brunswick County, North Carolina · 3.0 Mi.N. of JCT.US17 · Structure no. 000000000190139

Built
1989
36 years old
Condition
Fair
inspected January 2025
Type
Culvert
Steel
Length
40 ft
3 main spans
Daily traffic
1,300
2018 count
Owner
State
State Highway Agency

About this bridge

SR1345 over Royal Oak Swamp is a steel culvert carrying SR1345 over Royal Oak Swamp in Brunswick County, North Carolina. It was built in 1989, so it is 36 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 1,300 vehicles a day, roughly 6% of them trucks, projected to reach 2,600 by 2040. The structure is 40 ft (12.1 m) long. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
CarriesSR1345
CrossesRoyal Oak Swamp
Location3.0 Mi.N. of JCT.US17
RouteState Highway 1345
CountyBrunswick County
StateNorth Carolina
Coordinates34.0263, -78.33617
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 protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 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 rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length40 ft (12.1 m)
Longest span11 ft (3.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,300 (2018)
Projected traffic2,600 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 SR1345 over Royal Oak Swamp built?

It was built in 1989, making it 36 years old in 2025.

What condition is SR1345 over Royal Oak 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 January 2025.

How much traffic does SR1345 over Royal Oak Swamp carry?

About 1,300 vehicles per day (2018 count), of which roughly 6% are trucks.

How long is SR1345 over Royal Oak Swamp?

The structure is 40 ft (12.1 m) long with a longest span of 11 ft (3.3 m).

Who owns SR1345 over Royal Oak Swamp?

It is owned by the State Highway Agency.