US Bridges

NC135 over Mayo River

Fair

Rockingham County, North Carolina · 0.1 Mi. E. Jct. US220B · Structure no. 000000001570043

Built
1979
46 years old
Condition
Fair
inspected August 2023
Type
Slab
Prestressed Concrete
Length
254 ft
7 main spans
Daily traffic
6,900
2021 count
Owner
State
State Highway Agency

About this bridge

NC135 over Mayo River is a prestressed concrete slab carrying NC135 over Mayo River in Rockingham County, North Carolina. It was built in 1979, so it is 46 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 6,900 vehicles a day, roughly 8% of them trucks, projected to reach 13,800 by 2040. The structure is 254 ft (77.4 m) long and 48 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

Open in Google Maps
CarriesNC135
CrossesMayo River
Location0.1 Mi. E. Jct. US220B
RouteState Highway 135
CountyRockingham County
StateNorth Carolina
Coordinates36.40746, -79.96559
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
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 protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating32 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans7
Design loadHS 20 + Mod
Structure length254 ft (77.4 m)
Longest span34 ft (10.3 m)
Deck width48 ft (14.6 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,900 (2021)
Projected traffic13,800 by 2040
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 NC135 over Mayo River built?

It was built in 1979, making it 46 years old in 2025.

What condition is NC135 over Mayo River 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 August 2023.

How much traffic does NC135 over Mayo River carry?

About 6,900 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is NC135 over Mayo River?

The structure is 254 ft (77.4 m) long with a longest span of 34 ft (10.3 m) and a deck 48 ft wide.

Who owns NC135 over Mayo River?

It is owned by the State Highway Agency.