US Bridges

C-4-866 over Wilson CR

FairPosted for load

Anderson County, South Carolina · 9.4 MI SW of Anderson · Structure no. 000000000002295

Built
1956
69 years old
Condition
Fair
inspected November 2024
Type
Truss - Thru
Steel
Length
73 ft
1 main span
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-866 over Wilson CR is a steel truss - thru carrying C-4-866 over Wilson CR in Anderson County, South Carolina. It was built in 1956, so it is 69 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 73 ft (22.3 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesC-4-866
CrossesWilson CR
Location9.4 MI SW of Anderson
RouteCounty Highway 866
CountyAnderson County
StateSouth Carolina
Coordinates34.36138, -82.66445
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating4.3 US tons
Inventory rating2.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 10
Structure length73 ft (22.3 m)
Longest span73 ft (22.3 m)
Deck width20 ft (6 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic160 by 2043
Trucks5%
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

OwnerCounty Highway Agency
Maintained byCounty 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$359,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-4-866 over Wilson CR built?

It was built in 1956, making it 69 years old in 2025.

What condition is C-4-866 over Wilson CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in November 2024.

How much traffic does C-4-866 over Wilson CR carry?

About 125 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-4-866 over Wilson CR?

The structure is 73 ft (22.3 m) long with a longest span of 73 ft (22.3 m) and a deck 20 ft wide.

Who owns C-4-866 over Wilson CR?

It is owned by the County Highway Agency.