US Bridges

C-42-489 over Trib to N Tyger Riv

Fair

Spartanburg County, South Carolina · 5.8 MI SW Spartanburg · Structure no. 000000000007744

Built
1983
42 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
2,400
2023 count
Owner
County
County Highway Agency

About this bridge

C-42-489 over Trib to N Tyger Riv is a concrete culvert carrying C-42-489 over Trib to N Tyger Riv in Spartanburg County, South Carolina. It was built in 1983, so it is 42 years old, younger 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 2,400 vehicles a day, roughly 5% of them trucks, projected to reach 3,600 by 2043. The structure is 23 ft (7 m) long and 123 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesC-42-489
CrossesTrib to N Tyger Riv
Location5.8 MI SW Spartanburg
RouteCounty Highway 489
CountySpartanburg County
StateSouth Carolina
Coordinates34.88625, -81.99966
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width123 ft (37.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,400 (2023)
Projected traffic3,600 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$99,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-42-489 over Trib to N Tyger Riv built?

It was built in 1983, making it 42 years old in 2025.

What condition is C-42-489 over Trib to N Tyger Riv 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 November 2023.

How much traffic does C-42-489 over Trib to N Tyger Riv carry?

About 2,400 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-42-489 over Trib to N Tyger Riv?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 123 ft wide.

Who owns C-42-489 over Trib to N Tyger Riv?

It is owned by the County Highway Agency.