US Bridges

L-40-2027 over Rocky Branch

Fair

Richland County, South Carolina · City of Columbia · Structure no. 000000000000084

Built
1912
113 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
24 ft
3 main spans
Daily traffic
6,300
2023 count
Owner
County
County Highway Agency

About this bridge

L-40-2027 over Rocky Branch is a concrete culvert carrying L-40-2027 over Rocky Branch in Richland County, South Carolina. It was built in 1912, so it is 113 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 6,300 vehicles a day, roughly 2% of them trucks, projected to reach 10,143 by 2043. The structure is 24 ft (7.3 m) long and 93 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesL-40-2027
CrossesRocky Branch
LocationCity of Columbia
RouteCounty Highway 2027
CountyRichland County
StateSouth Carolina
Coordinates33.99477, -81.02356
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 protection7 GoodSome minor problems.
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 rating41.4 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span7 ft (2.1 m)
Deck width93 ft (28.2 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic10,143 by 2043
Trucks2%
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was L-40-2027 over Rocky Branch built?

It was built in 1912, making it 113 years old in 2025.

What condition is L-40-2027 over Rocky Branch 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-40-2027 over Rocky Branch carry?

About 6,300 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is L-40-2027 over Rocky Branch?

The structure is 24 ft (7.3 m) long with a longest span of 7 ft (2.1 m) and a deck 93 ft wide.

Who owns L-40-2027 over Rocky Branch?

It is owned by the County Highway Agency.