US Bridges

US 1 over Southern RR (no 1)

Fair

Aiken County, South Carolina · Hamburg Sc · Structure no. 000000000001845

Built
1952
73 years old, rebuilt 1981
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
162 ft
4 main spans
Daily traffic
27,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 1 over Southern RR (no 1) is a concrete continuous slab carrying US 1 over Southern RR (no 1) in Aiken County, South Carolina. It was built in 1952 and reconstructed in 1981, so it is 73 years old, older than the South Carolina average of 48 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.

It carries about 27,000 vehicles a day, roughly 6% of them trucks, projected to reach 29,700 by 2043. The structure is 162 ft (49.4 m) long and 84 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 1
CrossesSouthern RR (no 1)
LocationHamburg Sc
RouteU.S. Route 1
CountyAiken County
StateSouth Carolina
Coordinates33.48188, -81.95018
Functional classUrban Other Principal 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.2 US tons
Inventory rating32.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 20
Structure length162 ft (49.4 m)
Longest span45 ft (13.7 m)
Deck width84 ft (25.7 m)
Roadway width74 ft (22.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,000 (2023)
Projected traffic29,700 by 2043
Trucks6%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 over Southern RR (no 1) built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1981.

What condition is US 1 over Southern RR (no 1) 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 US 1 over Southern RR (no 1) carry?

About 27,000 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is US 1 over Southern RR (no 1)?

The structure is 162 ft (49.4 m) long with a longest span of 45 ft (13.7 m) and a deck 84 ft wide.

Who owns US 1 over Southern RR (no 1)?

It is owned by the State Highway Agency.