US Bridges

S-1271/BOWMAN RD over Shem Creek

Good

Charleston County, South Carolina · Mt Pleasant · Structure no. 000000000004481

Built
2012
13 years old
Condition
Good
inspected July 2023
Type
Slab
Concrete Continuous
Length
90 ft
3 main spans
Daily traffic
17,600
2023 count
Owner
State
State Highway Agency

About this bridge

S-1271/BOWMAN RD over Shem Creek is a concrete continuous slab carrying S-1271/BOWMAN RD over Shem Creek in Charleston County, South Carolina. It was built in 2012, so it is 13 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 17,600 vehicles a day, roughly 2% of them trucks, projected to reach 24,112 by 2043. The structure is 90 ft (27.4 m) long and 77 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-1271/BOWMAN RD
CrossesShem Creek
LocationMt Pleasant
RouteState Highway 1271
Coordinates32.81194, -79.85465
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating38.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length90 ft (27.4 m)
Longest span30 ft (9.1 m)
Deck width77 ft (23.5 m)
Roadway width65 ft (19.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,600 (2023)
Projected traffic24,112 by 2043
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-1271/BOWMAN RD over Shem Creek built?

It was built in 2012, making it 13 years old in 2025.

What condition is S-1271/BOWMAN RD over Shem Creek 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-1271/BOWMAN RD over Shem Creek carry?

About 17,600 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-1271/BOWMAN RD over Shem Creek?

The structure is 90 ft (27.4 m) long with a longest span of 30 ft (9.1 m) and a deck 77 ft wide.

Who owns S-1271/BOWMAN RD over Shem Creek?

It is owned by the State Highway Agency.