US Bridges

S-1-108 over Spillway of Raw Water Re

GoodPosted for load

Abbeville County, South Carolina · Town of Calhoun Falls · Structure no. 000000000004434

Built
1965
60 years old
Condition
Good
inspected September 2024
Type
Channel Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
275
2023 count
Owner
State
State Highway Agency

About this bridge

S-1-108 over Spillway of Raw Water Re is a prestressed concrete channel beam carrying S-1-108 over Spillway of Raw Water Re in Abbeville County, South Carolina. It was built in 1965, so it is 60 years old, older 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. Its operating status is: posted for load restriction.

It carries about 275 vehicles a day, roughly 4% of them trucks, projected to reach 352 by 2043. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-1-108
CrossesSpillway of Raw Water Re
LocationTown of Calhoun Falls
RouteState Highway 108
Coordinates34.09558, -82.59358
Functional classRural Local

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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating18.5 US tons
Inventory rating8.6 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadH 10
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic275 (2023)
Projected traffic352 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$206,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-1-108 over Spillway of Raw Water Re built?

It was built in 1965, making it 60 years old in 2025.

What condition is S-1-108 over Spillway of Raw Water Re 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 September 2024.

How much traffic does S-1-108 over Spillway of Raw Water Re carry?

About 275 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-1-108 over Spillway of Raw Water Re?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 28 ft wide.

Who owns S-1-108 over Spillway of Raw Water Re?

It is owned by the State Highway Agency.