US Bridges

US 401 over Scape Ore Swamp

Good

Lee County, South Carolina · 5 MI NW of Mayesville · Structure no. 000000000010302

Built
2020
5 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
352 ft
4 main spans
Daily traffic
1,350
2023 count
Owner
State
State Highway Agency

About this bridge

US 401 over Scape Ore Swamp is a prestressed concrete continuous stringer/multi-beam or girder carrying US 401 over Scape Ore Swamp in Lee County, South Carolina. It was built in 2020, so it is 5 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 1,350 vehicles a day, roughly 8% of them trucks, projected to reach 2,147 by 2043. The structure is 352 ft (107.3 m) long and 47 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS 401
CrossesScape Ore Swamp
Location5 MI NW of Mayesville
RouteU.S. Route 401
Coordinates34.03547, -80.26873
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length352 ft (107.3 m)
Longest span104 ft (31.7 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,350 (2023)
Projected traffic2,147 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-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 401 over Scape Ore Swamp built?

It was built in 2020, making it 5 years old in 2025.

What condition is US 401 over Scape Ore 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 July 2023.

How much traffic does US 401 over Scape Ore Swamp carry?

About 1,350 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is US 401 over Scape Ore Swamp?

The structure is 352 ft (107.3 m) long with a longest span of 104 ft (31.7 m) and a deck 47 ft wide.

Who owns US 401 over Scape Ore Swamp?

It is owned by the State Highway Agency.