US Bridges

US 1 over U S 1 Con Interchange

Good

Aiken County, South Carolina · At N. Augusta · Structure no. 000000000003150

Built
1960
65 years old, rebuilt 2009
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
131 ft
3 main spans
Daily traffic
27,000
2023 count
Owner
State
State Highway Agency

About this bridge

US 1 over U S 1 Con Interchange is a concrete continuous slab carrying US 1 over U S 1 Con Interchange in Aiken County, South Carolina. It was built in 1960 and reconstructed in 2009, so it is 65 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 27,000 vehicles a day, roughly 6% of them trucks, projected to reach 29,700 by 2043. The structure is 131 ft (39.8 m) long and 80 ft wide.

CarriesUS 1
CrossesU S 1 Con Interchange
LocationAt N. Augusta
RouteU.S. Route 1
Coordinates33.4782, -81.95387
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.2 US tons
Inventory rating31.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length131 ft (39.8 m)
Longest span52 ft (15.8 m)
Deck width80 ft (24.5 m)
Roadway width75 ft (23 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27,000 (2023)
Projected traffic29,700 by 2043
Trucks6%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1 over U S 1 Con Interchange built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 2009.

What condition is US 1 over U S 1 Con Interchange in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2024.

How much traffic does US 1 over U S 1 Con Interchange carry?

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

How long is US 1 over U S 1 Con Interchange?

The structure is 131 ft (39.8 m) long with a longest span of 52 ft (15.8 m) and a deck 80 ft wide.

Who owns US 1 over U S 1 Con Interchange?

It is owned by the State Highway Agency.