US Bridges

US 701 over Bug Swamp

Fair

Horry County, South Carolina · 7.5MI S of Loris · Structure no. 000000000004558

Built
2004
21 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
210 ft
7 main spans
Daily traffic
7,500
2023 count
Owner
State
State Highway Agency

About this bridge

US 701 over Bug Swamp is a concrete continuous slab carrying US 701 over Bug 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 fair condition with a lowest component rating of 6 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 7,500 vehicles a day, roughly 10% of them trucks, projected to reach 11,925 by 2043. The structure is 210 ft (64 m) long and 47 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesUS 701
CrossesBug Swamp
Location7.5MI S of Loris
RouteU.S. Route 701
CountyHorry County
StateSouth Carolina
Coordinates33.98686, -78.99793
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.7 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHL 93
Structure length210 ft (64 m)
Longest span30 ft (9.1 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2023)
Projected traffic11,925 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 701 over Bug Swamp built?

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

What condition is US 701 over Bug Swamp 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 January 2025.

How much traffic does US 701 over Bug Swamp carry?

About 7,500 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 701 over Bug Swamp?

The structure is 210 ft (64 m) long with a longest span of 30 ft (9.1 m) and a deck 47 ft wide.

Who owns US 701 over Bug Swamp?

It is owned by the State Highway Agency.