US Bridges

Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78

Good

Charleston County, South Carolina · 2 Miles SE of Charleston · Structure no. 000000000010606

Built
2020
5 years old
Condition
Good
inspected January 2025
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
2,653 ft
5 main spans
Daily traffic
2,300
2022 count
Owner
State
State Highway Agency

About this bridge

Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78 is a steel continuous stringer/multi-beam or girder carrying Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78 in Charleston County, South Carolina. It was built in 2020, so it is 5 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 2,300 vehicles a day, projected to reach 3,427 by 2042. The structure is 2,653 ft (808.5 m) long and 35 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesRamp Off I-26 EB
CrossesIRR CSXT&RR&I-26&US 78
Location2 Miles SE of Charleston
RouteState Highway 5
CountyCharleston County
StateSouth Carolina
Coordinates32.8336, -79.95872
Functional classUrban Other Principal 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 inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.1 US tons
Inventory rating24.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans5 (+13 approach)
Design loadHL 93
Structure length2,653 ft (808.5 m)
Longest span206 ft (62.9 m)
Deck width35 ft (10.8 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,300 (2022)
Projected traffic3,427 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway and railroad
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemYes

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 Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78 built?

It was built in 2020, making it 5 years old in 2025.

What condition is Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78 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 January 2025.

How much traffic does Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78 carry?

About 2,300 vehicles per day (2022 count).

How long is Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78?

The structure is 2,653 ft (808.5 m) long with a longest span of 206 ft (62.9 m) and a deck 35 ft wide.

Who owns Ramp Off I-26 EB over IRR CSXT&RR&I-26&US 78?

It is owned by the State Highway Agency.