US Bridges

S-29-125 over Mill Stone Branch

Good

Lancaster County, South Carolina · 1.4 MI N Van Wyck · Structure no. 000000000009521

Built
2000
25 years old
Condition
Good
inspected June 2023
Type
Slab
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
1,850
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-125 over Mill Stone Branch is a prestressed concrete slab carrying S-29-125 over Mill Stone Branch in Lancaster County, South Carolina. It was built in 2000, so it is 25 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,850 vehicles a day, roughly 11% of them trucks, projected to reach 2,572 by 2043. The structure is 50 ft (15.2 m) long and 36 ft wide.

CarriesS-29-125
CrossesMill Stone Branch
Location1.4 MI N Van Wyck
RouteState Highway 125
Coordinates34.87544, -80.83372
Functional classRural Minor 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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94.2 US tons
Inventory rating72.9 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span50 ft (15.2 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,850 (2023)
Projected traffic2,572 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-29-125 over Mill Stone Branch built?

It was built in 2000, making it 25 years old in 2025.

What condition is S-29-125 over Mill Stone 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 June 2023.

How much traffic does S-29-125 over Mill Stone Branch carry?

About 1,850 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is S-29-125 over Mill Stone Branch?

The structure is 50 ft (15.2 m) long with a longest span of 50 ft (15.2 m) and a deck 36 ft wide.

Who owns S-29-125 over Mill Stone Branch?

It is owned by the State Highway Agency.