US Bridges

S-16-50 over Boggy Branch

Good

Darlington County, South Carolina · 6MI N Hartsville · Structure no. 000000000006968

Built
1977
48 years old
Condition
Good
inspected January 2025
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
375
2023 count
Owner
State
State Highway Agency

About this bridge

S-16-50 over Boggy Branch is a concrete slab carrying S-16-50 over Boggy Branch in Darlington County, South Carolina. It was built in 1977, so it is 48 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 375 vehicles a day, roughly 11% of them trucks, projected to reach 480 by 2043. The structure is 45 ft (13.7 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-16-50
CrossesBoggy Branch
Location6MI N Hartsville
RouteState Highway 50
Coordinates34.46169, -80.0119
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating25.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 15
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic375 (2023)
Projected traffic480 by 2043
Trucks11%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-16-50 over Boggy Branch built?

It was built in 1977, making it 48 years old in 2025.

What condition is S-16-50 over Boggy 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 2025.

How much traffic does S-16-50 over Boggy Branch carry?

About 375 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is S-16-50 over Boggy Branch?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 34 ft wide.

Who owns S-16-50 over Boggy Branch?

It is owned by the State Highway Agency.