US Bridges

I-77 NB over Ramp on I-77 SB

Good

Richland County, South Carolina · 5 MI SE of Springdale · Structure no. 000000000007827

Built
1984
41 years old, rebuilt 2018
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
197 ft
3 main spans
Daily traffic
30,600
2023 count
Owner
State
State Highway Agency

About this bridge

I-77 NB over Ramp on I-77 SB is a steel stringer/multi-beam or girder carrying I-77 NB over Ramp on I-77 SB in Richland County, South Carolina. It was built in 1984 and reconstructed in 2018, so it is 41 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 30,600 vehicles a day, roughly 15% of them trucks, projected to reach 37,944 by 2043. The structure is 197 ft (60 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-77 NB
CrossesRamp on I-77 SB
Location5 MI SE of Springdale
RouteInterstate 77
CountyRichland County
StateSouth Carolina
Coordinates34.06938, -80.92303
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.9 US tons
Inventory rating53.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length197 ft (60 m)
Longest span82 ft (25 m)
Deck width63 ft (19.2 m)
Roadway width60 ft (18.3 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic30,600 (2023)
Projected traffic37,944 by 2043
Trucks15%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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 I-77 NB over Ramp on I-77 SB built?

It was built in 1984, making it 41 years old in 2025. It was reconstructed in 2018.

What condition is I-77 NB over Ramp on I-77 SB 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 January 2024.

How much traffic does I-77 NB over Ramp on I-77 SB carry?

About 30,600 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is I-77 NB over Ramp on I-77 SB?

The structure is 197 ft (60 m) long with a longest span of 82 ft (25 m) and a deck 63 ft wide.

Who owns I-77 NB over Ramp on I-77 SB?

It is owned by the State Highway Agency.