US Bridges

US 15 over Lynches River

Fair

Lee County, South Carolina · 2MI NE of Bishopville · Structure no. 000000000008577

Built
1992
33 years old
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
735 ft
3 main spans
Daily traffic
6,400
2023 count
Owner
State
State Highway Agency

About this bridge

US 15 over Lynches River is a steel continuous stringer/multi-beam or girder carrying US 15 over Lynches River in Lee County, South Carolina. It was built in 1992, so it is 33 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 6,400 vehicles a day, roughly 12% of them trucks, projected to reach 10,176 by 2043. The structure is 735 ft (224 m) long and 47 ft wide. If it were closed, the detour would be 14.3 mi (23 km).

CarriesUS 15
CrossesLynches River
Location2MI NE of Bishopville
RouteU.S. Route 15
Coordinates34.2501, -80.21296
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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating27.9 US tons
Inventory rating21.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+17 approach)
Design loadHS 20 + Mod
Structure length735 ft (224 m)
Longest span85 ft (25.9 m)
Deck width47 ft (14.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,400 (2023)
Projected traffic10,176 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.3 mi (23 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 15 over Lynches River built?

It was built in 1992, making it 33 years old in 2025.

What condition is US 15 over Lynches River 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 July 2024.

How much traffic does US 15 over Lynches River carry?

About 6,400 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US 15 over Lynches River?

The structure is 735 ft (224 m) long with a longest span of 85 ft (25.9 m) and a deck 47 ft wide.

Who owns US 15 over Lynches River?

It is owned by the State Highway Agency.