US Bridges

S-42-75 over Middle Tyger River

Good

Spartanburg County, South Carolina · 7.5 MI W of Inman · Structure no. 000000000010414

Built
2020
5 years old
Condition
Good
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
150 ft
2 main spans
Daily traffic
2,500
2023 count
Owner
State
State Highway Agency

About this bridge

S-42-75 over Middle Tyger River is a prestressed concrete stringer/multi-beam or girder carrying S-42-75 over Middle Tyger River in Spartanburg County, South Carolina. It was built in 2020, so it is 5 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,500 vehicles a day, roughly 7% of them trucks, projected to reach 3,825 by 2043. The structure is 150 ft (45.7 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesS-42-75
CrossesMiddle Tyger River
Location7.5 MI W of Inman
RouteState Highway 75
Coordinates35.03916, -82.21813
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating49.3 US tons
Inventory rating38.3 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length150 ft (45.7 m)
Longest span90 ft (27.4 m)
Deck width37 ft (11.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2023)
Projected traffic3,825 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 S-42-75 over Middle Tyger River built?

It was built in 2020, making it 5 years old in 2025.

What condition is S-42-75 over Middle Tyger River 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 August 2023.

How much traffic does S-42-75 over Middle Tyger River carry?

About 2,500 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is S-42-75 over Middle Tyger River?

The structure is 150 ft (45.7 m) long with a longest span of 90 ft (27.4 m) and a deck 37 ft wide.

Who owns S-42-75 over Middle Tyger River?

It is owned by the State Highway Agency.