US Bridges

L-23-851 over Southern RR

PoorPosted for load

Greenville County, South Carolina · Greenville (queen St.) · Structure no. 000000000000097

Built
1918
107 years old
Condition
Poor
inspected July 2024
Type
Girder and Floorbeam System
Concrete Continuous
Length
162 ft
3 main spans
Daily traffic
250
2023 count
Owner
Railroad
Railroad

About this bridge

L-23-851 over Southern RR is a concrete continuous girder and floorbeam system carrying L-23-851 over Southern RR in Greenville County, South Carolina. It was built in 1918, so it is 107 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. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, roughly 5% of them trucks, projected to reach 320 by 2043. The structure is 162 ft (49.3 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesL-23-851
CrossesSouthern RR
LocationGreenville (queen St.)
RouteCounty Highway 851
Coordinates34.85253, -82.42029
Functional classUrban Local

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating6.8 US tons
Inventory rating4 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3 (+1 approach)
Design loadH 10
Structure length162 ft (49.3 m)
Longest span61 ft (18.5 m)
Deck width36 ft (11.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic320 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerRailroad
Maintained byRailroad
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$776,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was L-23-851 over Southern RR built?

It was built in 1918, making it 107 years old in 2025.

What condition is L-23-851 over Southern RR 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 July 2024.

How much traffic does L-23-851 over Southern RR carry?

About 250 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is L-23-851 over Southern RR?

The structure is 162 ft (49.3 m) long with a longest span of 61 ft (18.5 m) and a deck 36 ft wide.

Who owns L-23-851 over Southern RR?

It is owned by the Railroad.