US Bridges

S-46-54 over Big Allison Creek

Fair

York County, South Carolina · 7.2 MI NE York · Structure no. 000000000007051

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Slab
Concrete
Length
240 ft
8 main spans
Daily traffic
4,900
2023 count
Owner
State
State Highway Agency

About this bridge

S-46-54 over Big Allison Creek is a concrete slab carrying S-46-54 over Big Allison Creek in York County, South Carolina. It was built in 1977, so it is 48 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 4,900 vehicles a day, roughly 4% of them trucks, projected to reach 5,684 by 2043. The structure is 240 ft (73.2 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesS-46-54
CrossesBig Allison Creek
Location7.2 MI NE York
RouteState Highway 54
Coordinates35.06326, -81.15139
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating57.1 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans8
Design loadHS 15
Structure length240 ft (73.2 m)
Longest span30 ft (9.1 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,900 (2023)
Projected traffic5,684 by 2043
Trucks4%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-46-54 over Big Allison Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is S-46-54 over Big Allison Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does S-46-54 over Big Allison Creek carry?

About 4,900 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-46-54 over Big Allison Creek?

The structure is 240 ft (73.2 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns S-46-54 over Big Allison Creek?

It is owned by the State Highway Agency.