US Bridges

L-8651/OLDESALTRUN over Tidal Creek

Good

Charleston County, South Carolina · In Mt Pleasant · Structure no. 000000000010462

Built
1999
26 years old
Condition
Good
inspected August 2023
Type
Slab
Concrete Continuous
Length
180 ft
6 main spans
Daily traffic
600
2023 count
Owner
County
County Highway Agency

About this bridge

L-8651/OLDESALTRUN over Tidal Creek is a concrete continuous slab carrying L-8651/OLDESALTRUN over Tidal Creek in Charleston County, South Carolina. It was built in 1999, so it is 26 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 600 vehicles a day, roughly 5% of them trucks, projected to reach 768 by 2043. The structure is 180 ft (54.9 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesL-8651/OLDESALTRUN
CrossesTidal Creek
LocationIn Mt Pleasant
RouteCounty Highway 8651
CountyCharleston County
StateSouth Carolina
Coordinates32.82173, -79.87496
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating45 US tons
Inventory rating34.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length180 ft (54.9 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.8 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic600 (2023)
Projected traffic768 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$557,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was L-8651/OLDESALTRUN over Tidal Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is L-8651/OLDESALTRUN over Tidal 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 August 2023.

How much traffic does L-8651/OLDESALTRUN over Tidal Creek carry?

About 600 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is L-8651/OLDESALTRUN over Tidal Creek?

The structure is 180 ft (54.9 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns L-8651/OLDESALTRUN over Tidal Creek?

It is owned by the County Highway Agency.