US Bridges

I-77 SB over S-1722 & Jackson Ck

Good

Richland County, South Carolina · 0.5 MI NW US 1 · Structure no. 000000000007503

Built
1981
44 years old, rebuilt 2018
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
410 ft
1 main span
Daily traffic
29,350
2023 count
Owner
State
State Highway Agency

About this bridge

I-77 SB over S-1722 & Jackson Ck is a steel stringer/multi-beam or girder carrying I-77 SB over S-1722 & Jackson Ck in Richland County, South Carolina. It was built in 1981 and reconstructed in 2018, so it is 44 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 29,350 vehicles a day, roughly 18% of them trucks, projected to reach 36,394 by 2043. The structure is 410 ft (125 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-77 SB
CrossesS-1722 & Jackson Ck
Location0.5 MI NW US 1
RouteInterstate 77
Coordinates34.08827, -80.9496
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
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure9 ExcellentNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating43.2 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+11 approach)
Design loadHS 25 or greater
Structure length410 ft (125 m)
Longest span79 ft (24.1 m)
Deck width63 ft (19.2 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic29,350 (2023)
Projected traffic36,394 by 2043
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and waterway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-77 SB over S-1722 & Jackson Ck built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 2018.

What condition is I-77 SB over S-1722 & Jackson Ck 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 SB over S-1722 & Jackson Ck carry?

About 29,350 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-77 SB over S-1722 & Jackson Ck?

The structure is 410 ft (125 m) long with a longest span of 79 ft (24.1 m) and a deck 63 ft wide.

Who owns I-77 SB over S-1722 & Jackson Ck?

It is owned by the State Highway Agency.