US Bridges

US 1/US 378 over RR Csxt/ RR NS

Good

Richland County, South Carolina · City of Columbia · Structure no. 000000000008094

Built
1985
40 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
180 ft
3 main spans
Daily traffic
21,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 1/US 378 over RR Csxt/ RR NS is a steel stringer/multi-beam or girder carrying US 1/US 378 over RR Csxt/ RR NS in Richland County, South Carolina. It was built in 1985, so it is 40 years old, younger 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 21,600 vehicles a day, roughly 2% of them trucks, projected to reach 33,912 by 2043. The structure is 180 ft (54.9 m) long and 100 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 1/US 378
CrossesRR Csxt/ RR NS
LocationCity of Columbia
RouteU.S. Route 1
CountyRichland County
StateSouth Carolina
Coordinates33.99861, -81.04194
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75.7 US tons
Inventory rating58.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span80 ft (24.4 m)
Deck width100 ft (30.5 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,600 (2023)
Projected traffic33,912 by 2043
Trucks2%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US 1/US 378 over RR Csxt/ RR NS built?

It was built in 1985, making it 40 years old in 2025.

What condition is US 1/US 378 over RR Csxt/ RR NS 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/US 378 over RR Csxt/ RR NS carry?

About 21,600 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 1/US 378 over RR Csxt/ RR NS?

The structure is 180 ft (54.9 m) long with a longest span of 80 ft (24.4 m) and a deck 100 ft wide.

Who owns US 1/US 378 over RR Csxt/ RR NS?

It is owned by the State Highway Agency.