US Bridges

I-85 over South Tyger River

Fair

Spartanburg County, South Carolina · 6.6 MI SE Greer · Structure no. 000000000009529

Built
2000
25 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
318 ft
4 main spans
Daily traffic
49,550
2023 count
Owner
State
State Highway Agency

About this bridge

I-85 over South Tyger River is a prestressed concrete stringer/multi-beam or girder carrying I-85 over South Tyger River in Spartanburg County, South Carolina. It was built in 2000, so it is 25 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 6 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 49,550 vehicles a day, roughly 20% of them trucks, projected to reach 61,938 by 2043. The structure is 318 ft (97 m) long and 107 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-85
CrossesSouth Tyger River
Location6.6 MI SE Greer
RouteInterstate 85
CountySpartanburg County
StateSouth Carolina
Coordinates34.90807, -82.11646
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.4 US tons
Inventory rating12.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHS 25 or greater
Structure length318 ft (97 m)
Longest span108 ft (33 m)
Deck width107 ft (32.5 m)
Roadway width104 ft (31.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49,550 (2023)
Projected traffic61,938 by 2043
Trucks20%
Lanes on structure6
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-85 over South Tyger River built?

It was built in 2000, making it 25 years old in 2025.

What condition is I-85 over South 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 February 2024.

How much traffic does I-85 over South Tyger River carry?

About 49,550 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is I-85 over South Tyger River?

The structure is 318 ft (97 m) long with a longest span of 108 ft (33 m) and a deck 107 ft wide.

Who owns I-85 over South Tyger River?

It is owned by the State Highway Agency.