US Bridges

SR1142 over Rocky River

Fair

Iredell County, North Carolina · 0.5 MI W. Jct. SR1146 · Structure no. 000000000970036

Built
1976
49 years old
Condition
Fair
inspected January 2024
Type
Slab
Prestressed Concrete
Length
91 ft
3 main spans
Daily traffic
4,200
2021 count
Owner
State
State Highway Agency

About this bridge

SR1142 over Rocky River is a prestressed concrete slab carrying SR1142 over Rocky River in Iredell County, North Carolina. It was built in 1976, so it is 49 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 4,200 vehicles a day, roughly 7% of them trucks, projected to reach 8,400 by 2040. The structure is 91 ft (27.7 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR1142
CrossesRocky River
Location0.5 MI W. Jct. SR1146
RouteState Highway 1142
CountyIredell County
StateNorth Carolina
Coordinates35.52364, -80.77831
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 inspectionJanuary 2024
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 rating73 US tons
Inventory rating43 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 15
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width25 ft (7.5 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,200 (2021)
Projected traffic8,400 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 SR1142 over Rocky River built?

It was built in 1976, making it 49 years old in 2025.

What condition is SR1142 over Rocky 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 January 2024.

How much traffic does SR1142 over Rocky River carry?

About 4,200 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1142 over Rocky River?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 25 ft wide.

Who owns SR1142 over Rocky River?

It is owned by the State Highway Agency.