US Bridges

Ramp on I-526 EB over ST Andrews Canal

Fair

Charleston County, South Carolina · City of Charleston · Structure no. 000000000009648

Built
1982
43 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
32 ft
3 main spans
Daily traffic
38,700
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp on I-526 EB over ST Andrews Canal is a concrete culvert carrying Ramp on I-526 EB over ST Andrews Canal in Charleston County, South Carolina. It was built in 1982, so it is 43 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 38,700 vehicles a day, roughly 5% of them trucks, projected to reach 53,793 by 2043. The structure is 32 ft (9.7 m) long.

CarriesRamp on I-526 EB
CrossesST Andrews Canal
LocationCity of Charleston
RouteInterstate 526
Coordinates32.7934, -80.03302
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating46.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length32 ft (9.7 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic38,700 (2023)
Projected traffic53,793 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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 Ramp on I-526 EB over ST Andrews Canal built?

It was built in 1982, making it 43 years old in 2025.

What condition is Ramp on I-526 EB over ST Andrews Canal 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 June 2024.

How much traffic does Ramp on I-526 EB over ST Andrews Canal carry?

About 38,700 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Ramp on I-526 EB over ST Andrews Canal?

The structure is 32 ft (9.7 m) long with a longest span of 10 ft (3 m).

Who owns Ramp on I-526 EB over ST Andrews Canal?

It is owned by the State Highway Agency.