US Bridges

Sc 9 over U.S. 17

Fair

Horry County, South Carolina · 1.5MI NW of Cherry Grove · Structure no. 000000000005757

Built
1970
55 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
268 ft
4 main spans
Daily traffic
20,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 9 over U.S. 17 is a steel stringer/multi-beam or girder carrying Sc 9 over U.S. 17 in Horry County, South Carolina. It was built in 1970, so it is 55 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 20,900 vehicles a day, roughly 4% of them trucks, projected to reach 29,260 by 2043. The structure is 268 ft (81.7 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSc 9
CrossesU.S. 17
Location1.5MI NW of Cherry Grove
RouteState Highway 9
CountyHorry County
StateSouth Carolina
Coordinates33.84736, -78.65298
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.5 US tons
Inventory rating15.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length268 ft (81.7 m)
Longest span100 ft (30.5 m)
Deck width47 ft (14.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,900 (2023)
Projected traffic29,260 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Sc 9 over U.S. 17 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Sc 9 over U.S. 17 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2024.

How much traffic does Sc 9 over U.S. 17 carry?

About 20,900 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Sc 9 over U.S. 17?

The structure is 268 ft (81.7 m) long with a longest span of 100 ft (30.5 m) and a deck 47 ft wide.

Who owns Sc 9 over U.S. 17?

It is owned by the State Highway Agency.