US Bridges

US 29 NB over North Tyger River

Fair

Spartanburg County, South Carolina · 6.0 MI W of Spartanburg · Structure no. 000000000006379

Built
1973
52 years old
Condition
Fair
inspected January 2025
Type
Slab
Concrete
Length
180 ft
6 main spans
Daily traffic
14,600
2023 count
Owner
State
State Highway Agency

About this bridge

US 29 NB over North Tyger River is a concrete slab carrying US 29 NB over North Tyger River in Spartanburg County, South Carolina. It was built in 1973, so it is 52 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 14,600 vehicles a day, roughly 5% of them trucks, projected to reach 29,054 by 2043. The structure is 180 ft (54.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS 29 NB
CrossesNorth Tyger River
Location6.0 MI W of Spartanburg
RouteU.S. Route 29
CountySpartanburg County
StateSouth Carolina
Coordinates34.93958, -82.05435
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span30 ft (9.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,600 (2023)
Projected traffic29,054 by 2043
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$344,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 29 NB over North Tyger River built?

It was built in 1973, making it 52 years old in 2025.

What condition is US 29 NB over North Tyger River 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 US 29 NB over North Tyger River carry?

About 14,600 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is US 29 NB over North Tyger River?

The structure is 180 ft (54.9 m) long with a longest span of 30 ft (9.1 m) and a deck 43 ft wide.

Who owns US 29 NB over North Tyger River?

It is owned by the State Highway Agency.