US Bridges

Ramp Off US 17 SB over US 52 Bus/Morrison DR

Good

Charleston County, South Carolina · Charleston City Limits · Structure no. 000000000009834

Built
2005
20 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,067 ft
8 main spans
Daily traffic
4,400
2015 count
Owner
State
State Highway Agency

About this bridge

Ramp Off US 17 SB over US 52 Bus/Morrison DR is a prestressed concrete continuous stringer/multi-beam or girder carrying Ramp Off US 17 SB over US 52 Bus/Morrison DR in Charleston County, South Carolina. It was built in 2005, so it is 20 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 4,400 vehicles a day, projected to reach 6,556 by 2035. The structure is 1,067 ft (325.2 m) long and 31 ft wide.

CarriesRamp Off US 17 SB
CrossesUS 52 Bus/Morrison DR
LocationCharleston City Limits
RouteU.S. Route 17
Coordinates32.80439, -79.94153
Functional classUrban Other Principal Arterial

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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.1 US tons
Inventory rating17.5 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadHS 25 or greater
Structure length1,067 ft (325.2 m)
Longest span140 ft (42.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,400 (2015)
Projected traffic6,556 by 2035
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.4 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp Off US 17 SB over US 52 Bus/Morrison DR built?

It was built in 2005, making it 20 years old in 2025.

What condition is Ramp Off US 17 SB over US 52 Bus/Morrison DR 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 April 2023.

How much traffic does Ramp Off US 17 SB over US 52 Bus/Morrison DR carry?

About 4,400 vehicles per day (2015 count).

How long is Ramp Off US 17 SB over US 52 Bus/Morrison DR?

The structure is 1,067 ft (325.2 m) long with a longest span of 140 ft (42.7 m) and a deck 31 ft wide.

Who owns Ramp Off US 17 SB over US 52 Bus/Morrison DR?

It is owned by the State Highway Agency.