US Bridges

Sc 31 SB over Sc 22

Good

Horry County, South Carolina · 7 MI N of Myrtle Beach · Structure no. 000000000009968

Built
2002
23 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
227 ft
2 main spans
Daily traffic
22,450
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 31 SB over Sc 22 is a prestressed concrete continuous stringer/multi-beam or girder carrying Sc 31 SB over Sc 22 in Horry County, South Carolina. It was built in 2002, so it is 23 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 22,450 vehicles a day, roughly 5% of them trucks, projected to reach 64,881 by 2043. The structure is 227 ft (69.2 m) long and 67 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSc 31 SB
CrossesSc 22
Location7 MI N of Myrtle Beach
RouteState Highway 31
Coordinates33.81119, -78.78022
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.2 US tons
Inventory rating41.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length227 ft (69.2 m)
Longest span114 ft (34.6 m)
Deck width67 ft (20.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,450 (2023)
Projected traffic64,881 by 2043
Trucks5%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 Sc 31 SB over Sc 22 built?

It was built in 2002, making it 23 years old in 2025.

What condition is Sc 31 SB over Sc 22 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 October 2024.

How much traffic does Sc 31 SB over Sc 22 carry?

About 22,450 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Sc 31 SB over Sc 22?

The structure is 227 ft (69.2 m) long with a longest span of 114 ft (34.6 m) and a deck 67 ft wide.

Who owns Sc 31 SB over Sc 22?

It is owned by the State Highway Agency.