US Bridges

Ramp Off I-77 SB over S-40-1301

Good

Richland County, South Carolina · 0.5 MI N 0F Sc 262 · Structure no. 000000000008484

Built
1991
34 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete
Length
41 ft
2 main spans
Daily traffic
6,000
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp Off I-77 SB over S-40-1301 is a concrete slab carrying Ramp Off I-77 SB over S-40-1301 in Richland County, South Carolina. It was built in 1991, so it is 34 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 6,000 vehicles a day, roughly 9% of them trucks, projected to reach 12,660 by 2043. The structure is 41 ft (12.6 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRamp Off I-77 SB
CrossesS-40-1301
Location0.5 MI N 0F Sc 262
RouteInterstate 77
CountyRichland County
StateSouth Carolina
Coordinates33.97956, -80.95509
Functional classUrban Principal Arterial - Interstate

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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length41 ft (12.6 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2023)
Projected traffic12,660 by 2043
Trucks9%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Ramp Off I-77 SB over S-40-1301 built?

It was built in 1991, making it 34 years old in 2025.

What condition is Ramp Off I-77 SB over S-40-1301 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 December 2023.

How much traffic does Ramp Off I-77 SB over S-40-1301 carry?

About 6,000 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Ramp Off I-77 SB over S-40-1301?

The structure is 41 ft (12.6 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Ramp Off I-77 SB over S-40-1301?

It is owned by the State Highway Agency.