US Bridges

Sc 703/PALM Blvd over Breach Inlet

Fair

Charleston County, South Carolina · Isle of Palms · Structure no. 000000000002305

Built
2002
23 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
1,024 ft
9 main spans
Daily traffic
5,900
2023 count
Owner
State
State Highway Agency

About this bridge

Sc 703/PALM Blvd over Breach Inlet is a prestressed concrete stringer/multi-beam or girder carrying Sc 703/PALM Blvd over Breach Inlet in Charleston County, South Carolina. It was built in 2002, so it is 23 years old, younger than the South Carolina average of 48 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,900 vehicles a day, roughly 2% of them trucks, projected to reach 8,437 by 2043. The structure is 1,024 ft (312.1 m) long and 58 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesSc 703/PALM Blvd
CrossesBreach Inlet
LocationIsle of Palms
RouteState Highway 703
CountyCharleston County
StateSouth Carolina
Coordinates32.77638, -79.81199
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans9
Design loadHS 25 or greater
Structure length1,024 ft (312.1 m)
Longest span114 ft (34.7 m)
Deck width58 ft (17.6 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,900 (2023)
Projected traffic8,437 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemYes

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 Sc 703/PALM Blvd over Breach Inlet built?

It was built in 2002, making it 23 years old in 2025.

What condition is Sc 703/PALM Blvd over Breach Inlet in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.

How much traffic does Sc 703/PALM Blvd over Breach Inlet carry?

About 5,900 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Sc 703/PALM Blvd over Breach Inlet?

The structure is 1,024 ft (312.1 m) long with a longest span of 114 ft (34.7 m) and a deck 58 ft wide.

Who owns Sc 703/PALM Blvd over Breach Inlet?

It is owned by the State Highway Agency.