US Bridges

Mills Branch-Bridg over Branch

Fair

Charleston County, South Carolina · No Data Entered · Structure no. 081205000003143

Built
1972
53 years old
Condition
Fair
inspected January 2025
Type
Channel Beam
Prestressed Concrete
Length
40 ft
2 main spans
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

Mills Branch-Bridg over Branch is a prestressed concrete channel beam carrying Mills Branch-Bridg over Branch in Charleston County, South Carolina. It was built in 1972, so it is 53 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.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 40 ft (12.3 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesMills Branch-Bridg
CrossesBranch
LocationNo Data Entered
RouteFederal Lands Road 211.1
CountyCharleston County
StateSouth Carolina
Coordinates33.14859, -79.50609
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating29.3 US tons
Inventory rating20.7 US tons

Structure

Structure typeChannel Beam
MaterialPrestressed Concrete
DeckOther
Main spans2
Design loadHS 20
Structure length40 ft (12.3 m)
Longest span20 ft (6.1 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mills Branch-Bridg over Branch built?

It was built in 1972, making it 53 years old in 2025.

What condition is Mills Branch-Bridg over 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 January 2025.

How much traffic does Mills Branch-Bridg over Branch carry?

About 50 vehicles per day (latest count).

How long is Mills Branch-Bridg over Branch?

The structure is 40 ft (12.3 m) long with a longest span of 20 ft (6.1 m) and a deck 16 ft wide.

Who owns Mills Branch-Bridg over Branch?

It is owned by the U.S. Forest Service.