US Bridges

L-40-454 over Br of Congaree River

Fair

Richland County, South Carolina · City of Columbia · Structure no. 000000000000072

Built
1910
115 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
6,600
2023 count
Owner
County
County Highway Agency

About this bridge

L-40-454 over Br of Congaree River is a concrete culvert carrying L-40-454 over Br of Congaree River in Richland County, South Carolina. It was built in 1910, so it is 115 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 6,600 vehicles a day, roughly 3% of them trucks, projected to reach 8,976 by 2043. The structure is 21 ft (6.4 m) long and 116 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesL-40-454
CrossesBr of Congaree River
LocationCity of Columbia
RouteCounty Highway 454
CountyRichland County
StateSouth Carolina
Coordinates33.98779, -81.02751
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating31.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width116 ft (35.4 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,600 (2023)
Projected traffic8,976 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was L-40-454 over Br of Congaree River built?

It was built in 1910, making it 115 years old in 2025.

What condition is L-40-454 over Br of Congaree River 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 2025.

How much traffic does L-40-454 over Br of Congaree River carry?

About 6,600 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is L-40-454 over Br of Congaree River?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 116 ft wide.

Who owns L-40-454 over Br of Congaree River?

It is owned by the County Highway Agency.