US Bridges

S-15-34 over Allen Creek

Good

Colleton County, South Carolina · 7 MI NE Waltb · Structure no. 000000000002318

Built
2005
20 years old
Condition
Good
inspected March 2023
Type
Slab
Concrete Continuous
Length
74 ft
3 main spans
Daily traffic
1,000
2023 count
Owner
State
State Highway Agency

About this bridge

S-15-34 over Allen Creek is a concrete continuous slab carrying S-15-34 over Allen Creek in Colleton County, South Carolina. It was built in 2005, so it is 20 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,460 by 2043. The structure is 74 ft (22.6 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesS-15-34
CrossesAllen Creek
Location7 MI NE Waltb
RouteState Highway 34
CountyColleton County
StateSouth Carolina
Coordinates33.00208, -80.65276
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length74 ft (22.6 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,460 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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-15-34 over Allen Creek built?

It was built in 2005, making it 20 years old in 2025.

What condition is S-15-34 over Allen Creek 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 March 2023.

How much traffic does S-15-34 over Allen Creek carry?

About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is S-15-34 over Allen Creek?

The structure is 74 ft (22.6 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns S-15-34 over Allen Creek?

It is owned by the State Highway Agency.