US Bridges

NC561 over Rocky Swamp

Fair

Halifax County, North Carolina · 1.8 MI E JCT NC48 · Structure no. 000000000830061

Built
1945
80 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete Continuous
Length
34 ft
3 main spans
Daily traffic
800
2022 count
Owner
State
State Highway Agency

About this bridge

NC561 over Rocky Swamp is a concrete continuous culvert carrying NC561 over Rocky Swamp in Halifax County, North Carolina. It was built in 1945, so it is 80 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 800 vehicles a day, roughly 8% of them trucks, projected to reach 1,600 by 2040. The structure is 34 ft (10.3 m) long. If it were closed, the detour would be 5.6 mi (9 km).

CarriesNC561
CrossesRocky Swamp
Location1.8 MI E JCT NC48
RouteState Highway 561
Coordinates36.27381, -77.82304
Functional classRural Minor Arterial

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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
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 rating37.9 US tons
Inventory rating29 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadUnknown
Structure length34 ft (10.3 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 traffic800 (2022)
Projected traffic1,600 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5.6 mi (9 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 NC561 over Rocky Swamp built?

It was built in 1945, making it 80 years old in 2025.

What condition is NC561 over Rocky 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 NC561 over Rocky Swamp carry?

About 800 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is NC561 over Rocky Swamp?

The structure is 34 ft (10.3 m) long with a longest span of 11 ft (3.3 m).

Who owns NC561 over Rocky Swamp?

It is owned by the State Highway Agency.