US Bridges

Sc 35 over I-77

Fair

Lexington County, South Carolina · 3 MI SE of Cayce · Structure no. 000000000009046

Built
1996
29 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
270 ft
2 main spans
Daily traffic
11,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 35 over I-77 is a steel continuous stringer/multi-beam or girder carrying Sc 35 over I-77 in Lexington County, South Carolina. It was built in 1996, so it is 29 years old, younger 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 11,900 vehicles a day, roughly 12% of them trucks, projected to reach 16,065 by 2043. The structure is 270 ft (82.3 m) long and 86 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSc 35
CrossesI-77
Location3 MI SE of Cayce
RouteState Highway 35
CountyLexington County
StateSouth Carolina
Coordinates33.92922, -81.04273
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.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.1 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20 + Mod
Structure length270 ft (82.3 m)
Longest span99 ft (30.2 m)
Deck width86 ft (26.2 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,900 (2023)
Projected traffic16,065 by 2043
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 Sc 35 over I-77 built?

It was built in 1996, making it 29 years old in 2025.

What condition is Sc 35 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 November 2023.

How much traffic does Sc 35 over I-77 carry?

About 11,900 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Sc 35 over I-77?

The structure is 270 ft (82.3 m) long with a longest span of 99 ft (30.2 m) and a deck 86 ft wide.

Who owns Sc 35 over I-77?

It is owned by the State Highway Agency.