US Bridges

S-40-434 over Eight Mile Creek

Good

Richland County, South Carolina · 4 MI NE of Columbia · Structure no. 000000000004202

Built
2013
12 years old
Condition
Good
inspected November 2024
Type
Slab
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
1,950
2023 count
Owner
State
State Highway Agency

About this bridge

S-40-434 over Eight Mile Creek is a prestressed concrete slab carrying S-40-434 over Eight Mile Creek in Richland County, South Carolina. It was built in 2013, so it is 12 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,950 vehicles a day, roughly 5% of them trucks, projected to reach 2,496 by 2043. The structure is 60 ft (18.3 m) long and 39 ft wide.

CarriesS-40-434
CrossesEight Mile Creek
Location4 MI NE of Columbia
RouteState Highway 434
Coordinates34.02392, -80.9723
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1 (+2 approach)
Design loadHL 93
Structure length60 ft (18.3 m)
Longest span60 ft (18.3 m)
Deck width39 ft (11.9 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,950 (2023)
Projected traffic2,496 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-40-434 over Eight Mile Creek built?

It was built in 2013, making it 12 years old in 2025.

What condition is S-40-434 over Eight Mile Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does S-40-434 over Eight Mile Creek carry?

About 1,950 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-40-434 over Eight Mile Creek?

The structure is 60 ft (18.3 m) long with a longest span of 60 ft (18.3 m) and a deck 39 ft wide.

Who owns S-40-434 over Eight Mile Creek?

It is owned by the State Highway Agency.