US Bridges

I-26 WB over Bowen Lake (s.Pac. Rv)

Fair

Spartanburg County, South Carolina · 4.0 MI N of Inman · Structure no. 000000000003488

Built
1960
65 years old, rebuilt 1982
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
490 ft
7 main spans
Daily traffic
16,500
2023 count
Owner
State
State Highway Agency

About this bridge

I-26 WB over Bowen Lake (s.Pac. Rv) is a prestressed concrete stringer/multi-beam or girder carrying I-26 WB over Bowen Lake (s.Pac. Rv) in Spartanburg County, South Carolina. It was built in 1960 and reconstructed in 1982, so it is 65 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 5 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 16,500 vehicles a day, roughly 19% of them trucks, projected to reach 22,770 by 2043. The structure is 490 ft (149.4 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI-26 WB
CrossesBowen Lake (s.Pac. Rv)
Location4.0 MI N of Inman
RouteInterstate 26
Coordinates35.10793, -82.08171
Functional classRural 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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.1 US tons
Inventory rating34.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans7
Design loadHS 20
Structure length490 ft (149.4 m)
Longest span70 ft (21.3 m)
Deck width43 ft (13 m)
Roadway width39 ft (12 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,500 (2023)
Projected traffic22,770 by 2043
Trucks19%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-26 WB over Bowen Lake (s.Pac. Rv) built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1982.

What condition is I-26 WB over Bowen Lake (s.Pac. Rv) 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 January 2025.

How much traffic does I-26 WB over Bowen Lake (s.Pac. Rv) carry?

About 16,500 vehicles per day (2023 count), of which roughly 19% are trucks.

How long is I-26 WB over Bowen Lake (s.Pac. Rv)?

The structure is 490 ft (149.4 m) long with a longest span of 70 ft (21.3 m) and a deck 43 ft wide.

Who owns I-26 WB over Bowen Lake (s.Pac. Rv)?

It is owned by the State Highway Agency.