US Bridges

US 1 SB over Pee Dee Overflow (no. 1)

Fair

Marlboro County, South Carolina · 0.5 MI NE of Cheraw · Structure no. 000000000000811

Built
1937
88 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete
Length
510 ft
17 main spans
Daily traffic
7,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 1 SB over Pee Dee Overflow (no. 1) is a concrete tee beam carrying US 1 SB over Pee Dee Overflow (no. 1) in Marlboro County, South Carolina. It was built in 1937, so it is 88 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 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 7,400 vehicles a day, roughly 14% of them trucks, projected to reach 11,544 by 2043. The structure is 510 ft (155.4 m) long and 26 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 1 SB
CrossesPee Dee Overflow (no. 1)
Location0.5 MI NE of Cheraw
RouteU.S. Route 1
CountyMarlboro County
StateSouth Carolina
Coordinates34.71046, -79.87201
Functional classUrban Other Principal 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 protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 22 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating30.3 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans17
Design loadH 15
Structure length510 ft (155.4 m)
Longest span30 ft (9.1 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,400 (2023)
Projected traffic11,544 by 2043
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$1.8 million (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 1 SB over Pee Dee Overflow (no. 1) built?

It was built in 1937, making it 88 years old in 2025.

What condition is US 1 SB over Pee Dee Overflow (no. 1) 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 May 2023.

How much traffic does US 1 SB over Pee Dee Overflow (no. 1) carry?

About 7,400 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is US 1 SB over Pee Dee Overflow (no. 1)?

The structure is 510 ft (155.4 m) long with a longest span of 30 ft (9.1 m) and a deck 26 ft wide.

Who owns US 1 SB over Pee Dee Overflow (no. 1)?

It is owned by the State Highway Agency.