US Bridges

C-36-503 over Cannons Creek

PoorClosed to traffic

Newberry County, South Carolina · 4.9MI NE of Newberry · Structure no. 000000000005992

Built
1971
54 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
120 ft
6 main spans
Daily traffic
125
2023 count
Owner
County
County Highway Agency

About this bridge

C-36-503 over Cannons Creek is a wood or timber stringer/multi-beam or girder carrying C-36-503 over Cannons Creek in Newberry County, South Carolina. It was built in 1971, so it is 54 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: closed to all traffic.

It carries about 125 vehicles a day, roughly 5% of them trucks, projected to reach 160 by 2043. The structure is 120 ft (36.6 m) long and 15 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesC-36-503
CrossesCannons Creek
Location4.9MI NE of Newberry
RouteCounty Highway 503
Coordinates34.29028, -81.53556
Functional classRural 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
Deck7 GoodSome minor problems.
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.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusClosed to all traffic
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry0: Immediate repair necessary to put back in service
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating12.1 US tons
Inventory rating8.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans6
Design loadUnknown
Structure length120 ft (36.6 m)
Longest span20 ft (6.1 m)
Deck width15 ft (4.7 m)
Roadway width15 ft (4.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic125 (2023)
Projected traffic160 by 2043
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$542,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was C-36-503 over Cannons Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is C-36-503 over Cannons Creek 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 June 2024.

How much traffic does C-36-503 over Cannons Creek carry?

About 125 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is C-36-503 over Cannons Creek?

The structure is 120 ft (36.6 m) long with a longest span of 20 ft (6.1 m) and a deck 15 ft wide.

Who owns C-36-503 over Cannons Creek?

It is owned by the County Highway Agency.