US Bridges

I-26 WB over U.S. 29

Good

Spartanburg County, South Carolina · 3.9 MI W Spartanburg · Structure no. 000000000003490

Built
1960
65 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
258 ft
2 main spans
Daily traffic
34,150
2023 count
Owner
State
State Highway Agency

About this bridge

I-26 WB over U.S. 29 is a steel stringer/multi-beam or girder carrying I-26 WB over U.S. 29 in Spartanburg County, South Carolina. It was built in 1960, 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 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 34,150 vehicles a day, roughly 12% of them trucks, projected to reach 42,688 by 2043. The structure is 258 ft (78.6 m) long and 46 ft wide.

CarriesI-26 WB
CrossesU.S. 29
Location3.9 MI W Spartanburg
RouteInterstate 26
Coordinates34.9362, -81.99571
Functional classUrban Principal Arterial - Interstate

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.
Substructure8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating52.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length258 ft (78.6 m)
Longest span68 ft (20.6 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,150 (2023)
Projected traffic42,688 by 2043
Trucks12%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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-26 WB over U.S. 29 built?

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

What condition is I-26 WB over U.S. 29 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 I-26 WB over U.S. 29 carry?

About 34,150 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is I-26 WB over U.S. 29?

The structure is 258 ft (78.6 m) long with a longest span of 68 ft (20.6 m) and a deck 46 ft wide.

Who owns I-26 WB over U.S. 29?

It is owned by the State Highway Agency.