US Bridges

S-45-35 over Mills Branch

Fair

Williamsburg County, South Carolina · 4.0 MI N Greeleyville · Structure no. 000000000008940

Built
1995
30 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
800
2023 count
Owner
State
State Highway Agency

About this bridge

S-45-35 over Mills Branch is a concrete continuous slab carrying S-45-35 over Mills Branch in Williamsburg County, South Carolina. It was built in 1995, so it is 30 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 800 vehicles a day, roughly 18% of them trucks, projected to reach 1,168 by 2043. The structure is 150 ft (45.7 m) long and 35 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesS-45-35
CrossesMills Branch
Location4.0 MI N Greeleyville
RouteState Highway 35
CountyWilliamsburg County
StateSouth Carolina
Coordinates33.72127, -79.95431
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.6 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic800 (2023)
Projected traffic1,168 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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-45-35 over Mills Branch built?

It was built in 1995, making it 30 years old in 2025.

What condition is S-45-35 over Mills Branch 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 August 2023.

How much traffic does S-45-35 over Mills Branch carry?

About 800 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is S-45-35 over Mills Branch?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns S-45-35 over Mills Branch?

It is owned by the State Highway Agency.