US Bridges

US 52 over Santee River Swamp (MD-6

Good

Williamsburg County, South Carolina · 21.2 Mi-Ne-Moncks Corner · Structure no. 000000000009541

Built
2000
25 years old
Condition
Good
inspected November 2024
Type
Slab
Concrete Continuous
Length
810 ft
27 main spans
Daily traffic
3,700
2023 count
Owner
State
State Highway Agency

About this bridge

US 52 over Santee River Swamp (MD-6 is a concrete continuous slab carrying US 52 over Santee River Swamp (MD-6 in Williamsburg County, South Carolina. It was built in 2000, so it is 25 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 3,700 vehicles a day, roughly 23% of them trucks, projected to reach 6,438 by 2043. The structure is 810 ft (246.9 m) long and 86 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesUS 52
CrossesSantee River Swamp (MD-6
Location21.2 Mi-Ne-Moncks Corner
RouteU.S. Route 52
Coordinates33.49989, -79.95837
Functional classRural Principal Arterial - Other

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 protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans27
Design loadHS 20 + Mod
Structure length810 ft (246.9 m)
Longest span30 ft (9.1 m)
Deck width86 ft (26.2 m)
Roadway width83 ft (25.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,700 (2023)
Projected traffic6,438 by 2043
Trucks23%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 52 over Santee River Swamp (MD-6 built?

It was built in 2000, making it 25 years old in 2025.

What condition is US 52 over Santee River Swamp (MD-6 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 52 over Santee River Swamp (MD-6 carry?

About 3,700 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is US 52 over Santee River Swamp (MD-6?

The structure is 810 ft (246.9 m) long with a longest span of 30 ft (9.1 m) and a deck 86 ft wide.

Who owns US 52 over Santee River Swamp (MD-6?

It is owned by the State Highway Agency.