US Bridges

S-1378 over RR CSXT & RR Pr

Good

Charleston County, South Carolina · 1.21 MI SE North Char · Structure no. 000000000010610

Built
2021
4 years old
Condition
Good
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
663 ft
2 main spans
Daily traffic
850
2023 count
Owner
State
State Highway Agency

About this bridge

S-1378 over RR CSXT & RR Pr is a prestressed concrete continuous stringer/multi-beam or girder carrying S-1378 over RR CSXT & RR Pr in Charleston County, South Carolina. It was built in 2021, so it is 4 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 850 vehicles a day, roughly 6% of them trucks, projected to reach 1,165 by 2043. The structure is 663 ft (202.1 m) long and 87 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesS-1378
CrossesRR CSXT & RR Pr
Location1.21 MI SE North Char
RouteState Highway 1378
CountyCharleston County
StateSouth Carolina
Coordinates32.84528, -79.95694
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+4 approach)
Design loadHL 93
Structure length663 ft (202.1 m)
Longest span150 ft (45.7 m)
Deck width87 ft (26.6 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic850 (2023)
Projected traffic1,165 by 2043
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-1378 over RR CSXT & RR Pr built?

It was built in 2021, making it 4 years old in 2025.

What condition is S-1378 over RR CSXT & RR Pr 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 February 2024.

How much traffic does S-1378 over RR CSXT & RR Pr carry?

About 850 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is S-1378 over RR CSXT & RR Pr?

The structure is 663 ft (202.1 m) long with a longest span of 150 ft (45.7 m) and a deck 87 ft wide.

Who owns S-1378 over RR CSXT & RR Pr?

It is owned by the State Highway Agency.