US Bridges

C-4-3634 over C & N W Railroad

PoorPosted for load

Anderson County, South Carolina · City of Anderson · Structure no. 000000000000321

Built
1929
96 years old
Condition
Poor
inspected November 2024
Type
Slab
Concrete
Length
42 ft
2 main spans
Daily traffic
6,300
2023 count
Owner
County
County Highway Agency

About this bridge

C-4-3634 over C & N W Railroad is a concrete slab carrying C-4-3634 over C & N W Railroad in Anderson County, South Carolina. It was built in 1929, so it is 96 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 6,300 vehicles a day, roughly 1% of them trucks, projected to reach 6,930 by 2043. The structure is 42 ft (12.8 m) long and 90 ft wide.

Location

Open in Google Maps
CarriesC-4-3634
CrossesC & N W Railroad
LocationCity of Anderson
RouteCounty Highway 3634
CountyAnderson County
StateSouth Carolina
Coordinates34.50423, -82.65042
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
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 inspectionNovember 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating16.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadH 15
Structure length42 ft (12.8 m)
Longest span21 ft (6.4 m)
Deck width90 ft (27.4 m)
Roadway width71 ft (21.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,300 (2023)
Projected traffic6,930 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$321,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was C-4-3634 over C & N W Railroad built?

It was built in 1929, making it 96 years old in 2025.

What condition is C-4-3634 over C & N W Railroad 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 November 2024.

How much traffic does C-4-3634 over C & N W Railroad carry?

About 6,300 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is C-4-3634 over C & N W Railroad?

The structure is 42 ft (12.8 m) long with a longest span of 21 ft (6.4 m) and a deck 90 ft wide.

Who owns C-4-3634 over C & N W Railroad?

It is owned by the County Highway Agency.