US Bridges

S-37-173 over Little River

Poor

Oconee County, South Carolina · 8.8 MI NE Walhalla · Structure no. 000000000002402

Built
1956
69 years old
Condition
Poor
inspected February 2025
Type
Slab
Concrete
Length
84 ft
6 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

S-37-173 over Little River is a concrete slab carrying S-37-173 over Little River in Oconee County, South Carolina. It was built in 1956, so it is 69 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 500 vehicles a day, roughly 4% of them trucks, projected to reach 695 by 2043. The structure is 84 ft (25.6 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesS-37-173
CrossesLittle River
Location8.8 MI NE Walhalla
RouteState Highway 173
Coordinates34.87025, -82.98215
Functional classRural Minor Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating37.5 US tons
Inventory rating22.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadH 10
Structure length84 ft (25.6 m)
Longest span14 ft (4.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic695 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$488,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-37-173 over Little River built?

It was built in 1956, making it 69 years old in 2025.

What condition is S-37-173 over Little River 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 February 2025.

How much traffic does S-37-173 over Little River carry?

About 500 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-37-173 over Little River?

The structure is 84 ft (25.6 m) long with a longest span of 14 ft (4.3 m) and a deck 26 ft wide.

Who owns S-37-173 over Little River?

It is owned by the State Highway Agency.