US Bridges

S-20-20 over Hogfork Branch

Good

Fairfield County, South Carolina · 1.5 MI E of I77 Exit 46 · Structure no. 000000000010944

Built
2024
1 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
100
2023 count
Owner
State
State Highway Agency

About this bridge

S-20-20 over Hogfork Branch is a prestressed concrete box beam or girders - multiple carrying S-20-20 over Hogfork Branch in Fairfield County, South Carolina. It was built in 2024, so it is 1 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 100 vehicles a day, roughly 16% of them trucks, projected to reach 146 by 2024. The structure is 70 ft (21.3 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-20-20
CrossesHogfork Branch
Location1.5 MI E of I77 Exit 46
RouteState Highway 20
Coordinates34.48417, -80.97111
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating68.6 US tons
Inventory rating52.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length70 ft (21.3 m)
Longest span70 ft (21.3 m)
Deck width30 ft (9.2 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic146 by 2024
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 S-20-20 over Hogfork Branch built?

It was built in 2024, making it 1 years old in 2025.

What condition is S-20-20 over Hogfork Branch 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 October 2024.

How much traffic does S-20-20 over Hogfork Branch carry?

About 100 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is S-20-20 over Hogfork Branch?

The structure is 70 ft (21.3 m) long with a longest span of 70 ft (21.3 m) and a deck 30 ft wide.

Who owns S-20-20 over Hogfork Branch?

It is owned by the State Highway Agency.