US Bridges

S-23-164 over I-85

Poor

Greenville County, South Carolina · 5MI S Greer · Structure no. 000000000002974

Built
1959
66 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
233 ft
4 main spans
Daily traffic
9,600
2023 count
Owner
State
State Highway Agency

About this bridge

S-23-164 over I-85 is a prestressed concrete stringer/multi-beam or girder carrying S-23-164 over I-85 in Greenville County, South Carolina. It was built in 1959, so it is 66 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,600 vehicles a day, roughly 5% of them trucks, projected to reach 12,192 by 2043. The structure is 233 ft (71 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS-23-164
CrossesI-85
Location5MI S Greer
RouteState Highway 164
CountyGreenville County
StateSouth Carolina
Coordinates34.8653, -82.24208
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length233 ft (71 m)
Longest span60 ft (18.3 m)
Deck width30 ft (9.2 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,600 (2023)
Projected traffic12,192 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$866,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was S-23-164 over I-85 built?

It was built in 1959, making it 66 years old in 2025.

What condition is S-23-164 over I-85 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does S-23-164 over I-85 carry?

About 9,600 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-23-164 over I-85?

The structure is 233 ft (71 m) long with a longest span of 60 ft (18.3 m) and a deck 30 ft wide.

Who owns S-23-164 over I-85?

It is owned by the State Highway Agency.