US Bridges

SR1730 over Southern RR

FairPosted for load

Burke County, North Carolina · .2 MI.S.JCT.US70 · Structure no. 000000000230304

Built
1952
73 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
128 ft
3 main spans
Daily traffic
1,600
2021 count
Owner
State
State Highway Agency

About this bridge

SR1730 over Southern RR is a steel stringer/multi-beam or girder carrying SR1730 over Southern RR in Burke County, North Carolina. It was built in 1952, so it is 73 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 1,600 vehicles a day, roughly 7% of them trucks, projected to reach 3,200 by 2040. The structure is 128 ft (39 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR1730
CrossesSouthern RR
Location.2 MI.S.JCT.US70
RouteState Highway 1730
CountyBurke County
StateNorth Carolina
Coordinates35.74295, -81.57408
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating31 US tons
Inventory rating18 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length128 ft (39 m)
Longest span41 ft (12.4 m)
Deck width24 ft (7.3 m)
Roadway width20 ft (6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2021)
Projected traffic3,200 by 2040
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR1730 over Southern RR built?

It was built in 1952, making it 73 years old in 2025.

What condition is SR1730 over Southern RR 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 November 2023.

How much traffic does SR1730 over Southern RR carry?

About 1,600 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is SR1730 over Southern RR?

The structure is 128 ft (39 m) long with a longest span of 41 ft (12.4 m) and a deck 24 ft wide.

Who owns SR1730 over Southern RR?

It is owned by the State Highway Agency.