US Bridges

I-77 Bridge Ramp over Unnamed

Good

Fairfield County, South Carolina · 5 MI SW of Ridgeway · Structure no. 000000000009905

Built
2006
19 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
250 ft
8 main spans
Daily traffic
300
2023 count
Owner
State
State Highway Agency

About this bridge

I-77 Bridge Ramp over Unnamed is a concrete continuous slab carrying I-77 Bridge Ramp over Unnamed in Fairfield County, South Carolina. It was built in 2006, so it is 19 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 300 vehicles a day, roughly 19% of them trucks, projected to reach 633 by 2043. The structure is 250 ft (76.2 m) long and 39 ft wide.

Location

Open in Google Maps
CarriesI-77 Bridge Ramp
CrossesUnnamed
Location5 MI SW of Ridgeway
RouteInterstate 20
CountyFairfield County
StateSouth Carolina
Coordinates34.28556, -80.99469
Functional classRural 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHL 93
Structure length250 ft (76.2 m)
Longest span40 ft (12.2 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2023)
Projected traffic633 by 2043
Trucks19%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 Bridge Ramp over Unnamed built?

It was built in 2006, making it 19 years old in 2025.

What condition is I-77 Bridge Ramp over Unnamed 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 June 2024.

How much traffic does I-77 Bridge Ramp over Unnamed carry?

About 300 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I-77 Bridge Ramp over Unnamed?

The structure is 250 ft (76.2 m) long with a longest span of 40 ft (12.2 m) and a deck 39 ft wide.

Who owns I-77 Bridge Ramp over Unnamed?

It is owned by the State Highway Agency.