US Bridges

S-23-340 over Jamison Mill Creek

Good

Greenville County, South Carolina · 15 MI N Greer · Structure no. 000000000004796

Built
1966
59 years old
Condition
Good
inspected May 2023
Type
Slab
Concrete
Length
45 ft
3 main spans
Daily traffic
500
2023 count
Owner
State
State Highway Agency

About this bridge

S-23-340 over Jamison Mill Creek is a concrete slab carrying S-23-340 over Jamison Mill Creek in Greenville County, South Carolina. It was built in 1966, so it is 59 years old, older 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 640 by 2043. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesS-23-340
CrossesJamison Mill Creek
Location15 MI N Greer
RouteState Highway 340
CountyGreenville County
StateSouth Carolina
Coordinates35.15738, -82.22787
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans3
Design loadH 10
Structure length45 ft (13.7 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2023)
Projected traffic640 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was S-23-340 over Jamison Mill Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is S-23-340 over Jamison Mill 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 May 2023.

How much traffic does S-23-340 over Jamison Mill Creek carry?

About 500 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is S-23-340 over Jamison Mill Creek?

The structure is 45 ft (13.7 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-23-340 over Jamison Mill Creek?

It is owned by the State Highway Agency.