US Bridges

S-20/BOHICKET RD over Bohicket Creek

Good

Charleston County, South Carolina · 9.8 MI SW Charleston · Structure no. 000000000001794

Built
2008
17 years old
Condition
Good
inspected June 2023
Type
Slab
Concrete Continuous
Length
66 ft
3 main spans
Daily traffic
17,900
2023 count
Owner
State
State Highway Agency

About this bridge

S-20/BOHICKET RD over Bohicket Creek is a concrete continuous slab carrying S-20/BOHICKET RD over Bohicket Creek in Charleston County, South Carolina. It was built in 2008, so it is 17 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 17,900 vehicles a day, roughly 7% of them trucks, projected to reach 21,838 by 2043. The structure is 66 ft (20.1 m) long and 37 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

CarriesS-20/BOHICKET RD
CrossesBohicket Creek
Location9.8 MI SW Charleston
RouteState Highway 20
Coordinates32.70683, -80.06916
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length66 ft (20.1 m)
Longest span22 ft (6.7 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,900 (2023)
Projected traffic21,838 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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-20/BOHICKET RD over Bohicket Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is S-20/BOHICKET RD over Bohicket 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 June 2023.

How much traffic does S-20/BOHICKET RD over Bohicket Creek carry?

About 17,900 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S-20/BOHICKET RD over Bohicket Creek?

The structure is 66 ft (20.1 m) long with a longest span of 22 ft (6.7 m) and a deck 37 ft wide.

Who owns S-20/BOHICKET RD over Bohicket Creek?

It is owned by the State Highway Agency.