US Bridges

S-22-14 over Boser Swamp

Good

Georgetown County, South Carolina · 5MI S Outland · Structure no. 000000000006977

Built
1997
28 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete Continuous
Length
74 ft
3 main spans
Daily traffic
450
2023 count
Owner
State
State Highway Agency

About this bridge

S-22-14 over Boser Swamp is a concrete continuous slab carrying S-22-14 over Boser Swamp in Georgetown County, South Carolina. It was built in 1997, so it is 28 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 450 vehicles a day, roughly 3% of them trucks, projected to reach 626 by 2043. The structure is 74 ft (22.6 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-22-14
CrossesBoser Swamp
Location5MI S Outland
RouteState Highway 14
Coordinates33.68628, -79.31445
Functional classRural Minor 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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 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 geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.2 US tons
Inventory rating47.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length74 ft (22.6 m)
Longest span30 ft (9.1 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (2023)
Projected traffic626 by 2043
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-22-14 over Boser Swamp built?

It was built in 1997, making it 28 years old in 2025.

What condition is S-22-14 over Boser Swamp 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 May 2023.

How much traffic does S-22-14 over Boser Swamp carry?

About 450 vehicles per day (2023 count), of which roughly 3% are trucks.

How long is S-22-14 over Boser Swamp?

The structure is 74 ft (22.6 m) long with a longest span of 30 ft (9.1 m) and a deck 35 ft wide.

Who owns S-22-14 over Boser Swamp?

It is owned by the State Highway Agency.