US Bridges

S-40-83 over I-77

Fair

Richland County, South Carolina · 9 MI NE of Columbia · Structure no. 000000000006923

Built
1976
49 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
306 ft
4 main spans
Daily traffic
3,500
2023 count
Owner
State
State Highway Agency

About this bridge

S-40-83 over I-77 is a steel stringer/multi-beam or girder carrying S-40-83 over I-77 in Richland County, South Carolina. It was built in 1976, so it is 49 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 3,500 vehicles a day, roughly 4% of them trucks, projected to reach 4,725 by 2043. The structure is 306 ft (93.3 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS-40-83
CrossesI-77
Location9 MI NE of Columbia
RouteState Highway 83
CountyRichland County
StateSouth Carolina
Coordinates34.11397, -80.96224
Functional classUrban Minor 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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to 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 rating51.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length306 ft (93.3 m)
Longest span112 ft (34.1 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,500 (2023)
Projected traffic4,725 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-40-83 over I-77 built?

It was built in 1976, making it 49 years old in 2025.

What condition is S-40-83 over I-77 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 2023.

How much traffic does S-40-83 over I-77 carry?

About 3,500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-40-83 over I-77?

The structure is 306 ft (93.3 m) long with a longest span of 112 ft (34.1 m) and a deck 37 ft wide.

Who owns S-40-83 over I-77?

It is owned by the State Highway Agency.