US Bridges

SR1397 over I-77

FairPosted for load

Surry County, North Carolina · 0.2 MI.S.JCT.SR1399 · Structure no. 000000001710196

Built
1975
50 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
298 ft
2 main spans
Daily traffic
1,400
2022 count
Owner
State
State Highway Agency

About this bridge

SR1397 over I-77 is a steel continuous stringer/multi-beam or girder carrying SR1397 over I-77 in Surry County, North Carolina. It was built in 1975, so it is 50 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. Its operating status is: posted for load restriction.

It carries about 1,400 vehicles a day, roughly 6% of them trucks, projected to reach 2,800 by 2040. The structure is 298 ft (90.8 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesSR1397
CrossesI-77
Location0.2 MI.S.JCT.SR1399
RouteState Highway 1397
CountySurry County
StateNorth Carolina
Coordinates36.47836, -80.75267
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating47 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadH 15
Structure length298 ft (90.8 m)
Longest span117 ft (35.6 m)
Deck width32 ft (9.7 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2022)
Projected traffic2,800 by 2040
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1397 over I-77 built?

It was built in 1975, making it 50 years old in 2025.

What condition is SR1397 over I-77 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 December 2023.

How much traffic does SR1397 over I-77 carry?

About 1,400 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is SR1397 over I-77?

The structure is 298 ft (90.8 m) long with a longest span of 117 ft (35.6 m) and a deck 32 ft wide.

Who owns SR1397 over I-77?

It is owned by the State Highway Agency.