US Bridges

US 501 Bridge Ramp over Socastee Swamp

Good

Horry County, South Carolina · 3 MI N or Myrtle Beach · Structure no. 000000000010010

Built
2004
21 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
150 ft
5 main spans
Daily traffic
2,590
2017 count
Owner
State
State Highway Agency

About this bridge

US 501 Bridge Ramp over Socastee Swamp is a concrete continuous slab carrying US 501 Bridge Ramp over Socastee Swamp in Horry County, South Carolina. It was built in 2004, so it is 21 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 2,590 vehicles a day, projected to reach 3,859 by 2037. The structure is 150 ft (45.7 m) long and 51 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 501 Bridge Ramp
CrossesSocastee Swamp
Location3 MI N or Myrtle Beach
RouteU.S. Route 501
Coordinates33.73177, -78.94341
Functional classUrban Other Principal 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 25 or greater
Structure length150 ft (45.7 m)
Longest span30 ft (9.1 m)
Deck width51 ft (15.5 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,590 (2017)
Projected traffic3,859 by 2037
Trucks0%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 501 Bridge Ramp over Socastee Swamp built?

It was built in 2004, making it 21 years old in 2025.

What condition is US 501 Bridge Ramp over Socastee 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 November 2024.

How much traffic does US 501 Bridge Ramp over Socastee Swamp carry?

About 2,590 vehicles per day (2017 count).

How long is US 501 Bridge Ramp over Socastee Swamp?

The structure is 150 ft (45.7 m) long with a longest span of 30 ft (9.1 m) and a deck 51 ft wide.

Who owns US 501 Bridge Ramp over Socastee Swamp?

It is owned by the State Highway Agency.