US Bridges

S-16-36 over Seed Branch

Good

Darlington County, South Carolina · 7MI NE Hartsville · Structure no. 000000000008997

Built
1996
29 years old
Condition
Good
inspected January 2024
Type
Slab
Concrete Continuous
Length
120 ft
4 main spans
Daily traffic
700
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-36 over Seed Branch is a concrete continuous slab carrying S-16-36 over Seed Branch in Darlington County, South Carolina. It was built in 1996, so it is 29 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 700 vehicles a day, roughly 5% of them trucks, projected to reach 896 by 2043. The structure is 120 ft (36.6 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-16-36
CrossesSeed Branch
Location7MI NE Hartsville
RouteState Highway 36
Coordinates34.41, -79.94
Functional classRural Local

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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length120 ft (36.6 m)
Longest span30 ft (9.1 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2023)
Projected traffic896 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 S-16-36 over Seed Branch built?

It was built in 1996, making it 29 years old in 2025.

What condition is S-16-36 over Seed Branch 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 January 2024.

How much traffic does S-16-36 over Seed Branch carry?

About 700 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-16-36 over Seed Branch?

The structure is 120 ft (36.6 m) long with a longest span of 30 ft (9.1 m) and a deck 37 ft wide.

Who owns S-16-36 over Seed Branch?

It is owned by the State Highway Agency.