US Bridges

S-15-28 over I-95

Fair

Colleton County, South Carolina · 8.5 MI SW Waltb · Structure no. 000000000005695

Built
1970
55 years old
Condition
Fair
inspected March 2025
Type
Stringer/Multi-beam or Girder
Steel
Length
300 ft
2 main spans
Daily traffic
225
2023 count
Owner
State
State Highway Agency

About this bridge

S-15-28 over I-95 is a steel stringer/multi-beam or girder carrying S-15-28 over I-95 in Colleton County, South Carolina. It was built in 1970, so it is 55 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 225 vehicles a day, roughly 13% of them trucks, projected to reach 329 by 2043. The structure is 300 ft (91.4 m) long and 38 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

Location

Open in Google Maps
CarriesS-15-28
CrossesI-95
Location8.5 MI SW Waltb
RouteState Highway 28
CountyColleton County
StateSouth Carolina
Coordinates32.80517, -80.76974
Functional classRural Major Collector

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.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating43.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 15
Structure length300 ft (91.4 m)
Longest span106 ft (32.3 m)
Deck width38 ft (11.5 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic225 (2023)
Projected traffic329 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.3 mi (23 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-15-28 over I-95 built?

It was built in 1970, making it 55 years old in 2025.

What condition is S-15-28 over I-95 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 March 2025.

How much traffic does S-15-28 over I-95 carry?

About 225 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is S-15-28 over I-95?

The structure is 300 ft (91.4 m) long with a longest span of 106 ft (32.3 m) and a deck 38 ft wide.

Who owns S-15-28 over I-95?

It is owned by the State Highway Agency.