US Bridges

S-10-97 over Tidal Stream

Poor

Charleston County, South Carolina · 2.5 MI N Mt Pleasant · Structure no. 000000000006053

Built
1972
53 years old
Condition
Poor
inspected October 2024
Type
Slab
Concrete
Length
30 ft
2 main spans
Daily traffic
18,100
2023 count
Owner
State
State Highway Agency

About this bridge

S-10-97 over Tidal Stream is a concrete slab carrying S-10-97 over Tidal Stream in Charleston County, South Carolina. It was built in 1972, so it is 53 years old, older than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 18,100 vehicles a day, roughly 2% of them trucks, projected to reach 22,082 by 2043. The structure is 30 ft (9.1 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesS-10-97
CrossesTidal Stream
Location2.5 MI N Mt Pleasant
RouteState Highway 97
CountyCharleston County
StateSouth Carolina
Coordinates32.84694, -79.82722
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating46.4 US tons
Inventory rating27.9 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadH 15
Structure length30 ft (9.1 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 traffic18,100 (2023)
Projected traffic22,082 by 2043
Trucks2%
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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$296,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was S-10-97 over Tidal Stream built?

It was built in 1972, making it 53 years old in 2025.

What condition is S-10-97 over Tidal Stream in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does S-10-97 over Tidal Stream carry?

About 18,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is S-10-97 over Tidal Stream?

The structure is 30 ft (9.1 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns S-10-97 over Tidal Stream?

It is owned by the State Highway Agency.