US Bridges

SR1170 over Stony Fork Creek

Fair

Wilkes County, North Carolina · .3 MI.S.JCT.SR1155 · Structure no. 000000001930691

Built
1958
67 years old, rebuilt 2022
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
34 ft
1 main span
Daily traffic
70
2000 count
Owner
State
State Highway Agency

About this bridge

SR1170 over Stony Fork Creek is a steel stringer/multi-beam or girder carrying SR1170 over Stony Fork Creek in Wilkes County, North Carolina. It was built in 1958 and reconstructed in 2022, so it is 67 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 70 vehicles a day, roughly 6% of them trucks, projected to reach 140 by 2040. The structure is 34 ft (10.3 m) long and 17 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesSR1170
CrossesStony Fork Creek
Location.3 MI.S.JCT.SR1155
RouteState Highway 1170
CountyWilkes County
StateNorth Carolina
Coordinates36.12789, -81.39542
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry8: Equal to present desirable criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73 US tons
Inventory rating43 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckWood or timber
Main spans1
Design loadUnknown
Structure length34 ft (10.3 m)
Longest span32 ft (9.7 m)
Deck width17 ft (5.1 m)
Roadway width16 ft (4.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic70 (2000)
Projected traffic140 by 2040
Trucks6%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 SR1170 over Stony Fork Creek built?

It was built in 1958, making it 67 years old in 2025. It was reconstructed in 2022.

What condition is SR1170 over Stony Fork Creek 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 October 2024.

How much traffic does SR1170 over Stony Fork Creek carry?

About 70 vehicles per day (2000 count), of which roughly 6% are trucks.

How long is SR1170 over Stony Fork Creek?

The structure is 34 ft (10.3 m) long with a longest span of 32 ft (9.7 m) and a deck 17 ft wide.

Who owns SR1170 over Stony Fork Creek?

It is owned by the State Highway Agency.