US Bridges

S-31-73 over Mcgirts Creek

Good

Lee County, South Carolina · 8 MI SW of Bishopville · Structure no. 000000000006536

Built
2006
19 years old
Condition
Good
inspected July 2023
Type
Slab
Prestressed Concrete
Length
100 ft
3 main spans
Daily traffic
425
2023 count
Owner
State
State Highway Agency

About this bridge

S-31-73 over Mcgirts Creek is a prestressed concrete slab carrying S-31-73 over Mcgirts Creek in Lee County, South Carolina. It was built in 2006, so it is 19 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 425 vehicles a day, roughly 8% of them trucks, projected to reach 621 by 2043. The structure is 100 ft (30.5 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-31-73
CrossesMcgirts Creek
Location8 MI SW of Bishopville
RouteState Highway 73
Coordinates34.14436, -80.36324
Functional classRural Major Collector

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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.4 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 25 or greater
Structure length100 ft (30.5 m)
Longest span60 ft (18.3 m)
Deck width36 ft (11 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic425 (2023)
Projected traffic621 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$155,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-31-73 over Mcgirts Creek built?

It was built in 2006, making it 19 years old in 2025.

What condition is S-31-73 over Mcgirts Creek 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 S-31-73 over Mcgirts Creek carry?

About 425 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is S-31-73 over Mcgirts Creek?

The structure is 100 ft (30.5 m) long with a longest span of 60 ft (18.3 m) and a deck 36 ft wide.

Who owns S-31-73 over Mcgirts Creek?

It is owned by the State Highway Agency.