US Bridges

Sc 31 over Sc 707

Good

Horry County, South Carolina · 3 MI N Myrtle Beach · Structure no. 000000000010267

Built
2019
6 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
148 ft
1 main span
Daily traffic
23,300
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 31 over Sc 707 is a steel stringer/multi-beam or girder carrying Sc 31 over Sc 707 in Horry County, South Carolina. It was built in 2019, so it is 6 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 23,300 vehicles a day, roughly 7% of them trucks, projected to reach 67,337 by 2043. The structure is 148 ft (45.1 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesSc 31
CrossesSc 707
Location3 MI N Myrtle Beach
RouteState Highway 31
Coordinates33.65333, -79.01927
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.1 US tons
Inventory rating44 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length148 ft (45.1 m)
Longest span148 ft (45.1 m)
Deck width86 ft (26.1 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,300 (2023)
Projected traffic67,337 by 2043
Trucks7%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 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 over Sc 707 built?

It was built in 2019, making it 6 years old in 2025.

What condition is Sc 31 over Sc 707 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 November 2023.

How much traffic does Sc 31 over Sc 707 carry?

About 23,300 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Sc 31 over Sc 707?

The structure is 148 ft (45.1 m) long with a longest span of 148 ft (45.1 m) and a deck 86 ft wide.

Who owns Sc 31 over Sc 707?

It is owned by the State Highway Agency.