US Bridges

Ramp Off US 17 NB over Harry M Hallman Jr Blvd

Good

Charleston County, South Carolina · Mt. Pleasant · Structure no. 000000000009829

Built
2005
20 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
890 ft
7 main spans
Daily traffic
37,500
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp Off US 17 NB over Harry M Hallman Jr Blvd is a prestressed concrete continuous stringer/multi-beam or girder carrying Ramp Off US 17 NB over Harry M Hallman Jr Blvd 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 37,500 vehicles a day, roughly 2% of them trucks, projected to reach 53,625 by 2043. The structure is 890 ft (271.3 m) long and 51 ft wide.

Location

Open in Google Maps
CarriesRamp Off US 17 NB
CrossesHarry M Hallman Jr Blvd
LocationMt. Pleasant
RouteState Highway 703
CountyCharleston County
StateSouth Carolina
Coordinates32.8008, -79.90201
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 inspectionMay 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 geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.9 US tons
Inventory rating17.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans7
Design loadHS 25 or greater
Structure length890 ft (271.3 m)
Longest span140 ft (42.7 m)
Deck width51 ft (15.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,500 (2023)
Projected traffic53,625 by 2043
Trucks2%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Ramp Off US 17 NB over Harry M Hallman Jr Blvd built?

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

What condition is Ramp Off US 17 NB over Harry M Hallman Jr Blvd 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 May 2023.

How much traffic does Ramp Off US 17 NB over Harry M Hallman Jr Blvd carry?

About 37,500 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is Ramp Off US 17 NB over Harry M Hallman Jr Blvd?

The structure is 890 ft (271.3 m) long with a longest span of 140 ft (42.7 m) and a deck 51 ft wide.

Who owns Ramp Off US 17 NB over Harry M Hallman Jr Blvd?

It is owned by the State Highway Agency.