US Bridges

I-95 SB over S-21-13

Fair

Florence County, South Carolina · 4.0 MI NW of Florence · Structure no. 000000000004778

Built
1966
59 years old, rebuilt 2004
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
160 ft
3 main spans
Daily traffic
28,850
2023 count
Owner
State
State Highway Agency

About this bridge

I-95 SB over S-21-13 is a prestressed concrete stringer/multi-beam or girder carrying I-95 SB over S-21-13 in Florence County, South Carolina. It was built in 1966 and reconstructed in 2004, so it is 59 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 28,850 vehicles a day, roughly 18% of them trucks, projected to reach 19,907 by 2043. The structure is 160 ft (48.8 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-95 SB
CrossesS-21-13
Location4.0 MI NW of Florence
RouteInterstate 95
Coordinates34.20484, -79.83336
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating64.3 US tons
Inventory rating35.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length160 ft (48.8 m)
Longest span70 ft (21.3 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,850 (2023)
Projected traffic19,907 by 2043
Trucks18%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-95 SB over S-21-13 built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2004.

What condition is I-95 SB over S-21-13 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 April 2024.

How much traffic does I-95 SB over S-21-13 carry?

About 28,850 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is I-95 SB over S-21-13?

The structure is 160 ft (48.8 m) long with a longest span of 70 ft (21.3 m) and a deck 71 ft wide.

Who owns I-95 SB over S-21-13?

It is owned by the State Highway Agency.