US Bridges

S-1-70 over Bowmans Branch

Fair

Abbeville County, South Carolina · 2.4MI W Lowndesville · Structure no. 000000000007056

Built
1978
47 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
75 ft
5 main spans
Daily traffic
125
2023 count
Owner
State
State Highway Agency

About this bridge

S-1-70 over Bowmans Branch is a concrete slab carrying S-1-70 over Bowmans Branch in Abbeville County, South Carolina. It was built in 1978, so it is 47 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 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 75 ft (22.9 m) long and 33 ft wide.

CarriesS-1-70
CrossesBowmans Branch
Location2.4MI W Lowndesville
RouteState Highway 70
Coordinates34.21401, -82.68921
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.2 US tons
Inventory rating28.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans5
Design loadH 15
Structure length75 ft (22.9 m)
Longest span15 ft (4.6 m)
Deck width33 ft (10.1 m)
Roadway width32 ft (9.7 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 closed—
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-1-70 over Bowmans Branch built?

It was built in 1978, making it 47 years old in 2025.

What condition is S-1-70 over Bowmans 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 September 2024.

How much traffic does S-1-70 over Bowmans Branch carry?

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

How long is S-1-70 over Bowmans Branch?

The structure is 75 ft (22.9 m) long with a longest span of 15 ft (4.6 m) and a deck 33 ft wide.

Who owns S-1-70 over Bowmans Branch?

It is owned by the State Highway Agency.