US Bridges

I-95 SB over Allen Creek

Fair

Colleton County, South Carolina · 7.5 MI N of Waltbr · Structure no. 000000000006071

Built
1972
53 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
24,700
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 SB over Allen Creek is a concrete culvert carrying I-95 SB over Allen Creek in Colleton 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 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 24,700 vehicles a day, roughly 22% of them trucks, projected to reach 43,225 by 2043. The structure is 21 ft (6.3 m) long. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesI-95 SB
CrossesAllen Creek
Location7.5 MI N of Waltbr
RouteInterstate 95
CountyColleton County
StateSouth Carolina
Coordinates33.01625, -80.66663
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating63.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,700 (2023)
Projected traffic43,225 by 2043
Trucks22%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 I-95 SB over Allen Creek built?

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

What condition is I-95 SB over Allen Creek 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 2024.

How much traffic does I-95 SB over Allen Creek carry?

About 24,700 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is I-95 SB over Allen Creek?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns I-95 SB over Allen Creek?

It is owned by the State Highway Agency.