US Bridges

Ramp on I-77 NB over S-40-1301

Good

Richland County, South Carolina · 5 Mii SE of Sc 262 · Structure no. 000000000008478

Built
1991
34 years old
Condition
Good
inspected December 2023
Type
Slab
Concrete
Length
41 ft
2 main spans
Daily traffic
43,250
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp on I-77 NB over S-40-1301 is a concrete slab carrying Ramp on I-77 NB 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 43,250 vehicles a day, roughly 16% of them trucks, projected to reach 53,630 by 2043. The structure is 41 ft (12.6 m) long and 588 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesRamp on I-77 NB
CrossesS-40-1301
Location5 Mii SE of Sc 262
RouteInterstate 77
CountyRichland County
StateSouth Carolina
Coordinates33.97889, -80.95431
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 width588 ft (179.2 m)
Roadway width560 ft (170.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic43,250 (2023)
Projected traffic53,630 by 2043
Trucks16%
Lanes on structure7
Traffic directionTwo-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 on I-77 NB over S-40-1301 built?

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

What condition is Ramp on I-77 NB 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 on I-77 NB over S-40-1301 carry?

About 43,250 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is Ramp on I-77 NB 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 588 ft wide.

Who owns Ramp on I-77 NB over S-40-1301?

It is owned by the State Highway Agency.