US Bridges

S-29-66 over Six Mile Creek

Good

Lancaster County, South Carolina · 5.5MI N Van Wyck · Structure no. 000000000009227

Built
1997
28 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
159 ft
1 main span
Daily traffic
9,700
2023 count
Owner
State
State Highway Agency

About this bridge

S-29-66 over Six Mile Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying S-29-66 over Six Mile Creek in Lancaster County, South Carolina. It was built in 1997, so it is 28 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 9,700 vehicles a day, roughly 4% of them trucks, projected to reach 12,901 by 2043. The structure is 159 ft (48.5 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesS-29-66
CrossesSix Mile Creek
Location5.5MI N Van Wyck
RouteState Highway 66
Coordinates34.93497, -80.81833
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than 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 alignment7: Better than present minimum criteria
Operating rating76.8 US tons
Inventory rating56.4 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 25 or greater
Structure length159 ft (48.5 m)
Longest span59 ft (18 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,700 (2023)
Projected traffic12,901 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
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-29-66 over Six Mile Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is S-29-66 over Six 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 June 2023.

How much traffic does S-29-66 over Six Mile Creek carry?

About 9,700 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is S-29-66 over Six Mile Creek?

The structure is 159 ft (48.5 m) long with a longest span of 59 ft (18 m) and a deck 37 ft wide.

Who owns S-29-66 over Six Mile Creek?

It is owned by the State Highway Agency.