US Bridges

S-39-277 over Twelve Mile Creek

PoorClosed to traffic

Pickens County, South Carolina · 2.0 MI W Norris · Structure no. 000000000004403

Built
1964
61 years old
Condition
Poor
inspected December 2024
Type
Truss - Thru
Steel
Length
175 ft
2 main spans
Daily traffic
350
2023 count
Owner
State
State Highway Agency

About this bridge

S-39-277 over Twelve Mile Creek is a steel truss - thru carrying S-39-277 over Twelve Mile Creek in Pickens County, South Carolina. It was built in 1964, so it is 61 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 2 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 350 vehicles a day, roughly 5% of them trucks, projected to reach 448 by 2043. The structure is 175 ft (53.4 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-39-277
CrossesTwelve Mile Creek
Location2.0 MI W Norris
RouteState Highway 277
Coordinates34.76261, -82.79207
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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure2 CriticalAdvanced deterioration of primary structural elements. Bridge may be closed until corrective action is taken.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 12 months
Operating statusClosed to all traffic
ScourUnknown foundation; not evaluated for scour
Structural evaluation0: Immediate repair necessary to put back in service
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating12.5 US tons
Inventory rating7.5 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadH 10
Structure length175 ft (53.4 m)
Longest span88 ft (26.8 m)
Deck width20 ft (6 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2023)
Projected traffic448 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-39-277 over Twelve Mile Creek built?

It was built in 1964, making it 61 years old in 2025.

What condition is S-39-277 over Twelve Mile 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 December 2024.

How much traffic does S-39-277 over Twelve Mile Creek carry?

About 350 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-39-277 over Twelve Mile Creek?

The structure is 175 ft (53.4 m) long with a longest span of 88 ft (26.8 m) and a deck 20 ft wide.

Who owns S-39-277 over Twelve Mile Creek?

It is owned by the State Highway Agency.