US Bridges

S-10-75 over I-26

Good

Charleston County, South Carolina · N Chas · Structure no. 000000000004061

Built
2005
20 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
217 ft
2 main spans
Daily traffic
76,900
2023 count
Owner
State
State Highway Agency

About this bridge

S-10-75 over I-26 is a steel continuous stringer/multi-beam or girder carrying S-10-75 over I-26 in Charleston 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 76,900 vehicles a day, roughly 22% of them trucks, projected to reach 93,818 by 2043. The structure is 217 ft (66.1 m) long and 141 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-10-75
CrossesI-26
LocationN Chas
RouteState Highway 75
Coordinates32.93478, -80.04748
Functional classUrban Minor Arterial

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.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.1 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length217 ft (66.1 m)
Longest span126 ft (38.4 m)
Deck width141 ft (42.9 m)
Roadway width127 ft (38.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,900 (2023)
Projected traffic93,818 by 2043
Trucks22%
Lanes on structure9
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.5 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-10-75 over I-26 built?

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

What condition is S-10-75 over I-26 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 July 2023.

How much traffic does S-10-75 over I-26 carry?

About 76,900 vehicles per day (2023 count), of which roughly 22% are trucks.

How long is S-10-75 over I-26?

The structure is 217 ft (66.1 m) long with a longest span of 126 ft (38.4 m) and a deck 141 ft wide.

Who owns S-10-75 over I-26?

It is owned by the State Highway Agency.