US Bridges

Parkgate Drive over Slate Run

Good

Prince William County, Virginia · 00.40FR651 / 00.60TO649 · Structure no. 000000000014350

Built
1990
35 years old
Condition
Good
inspected July 2024
Type
Slab
Prestressed Concrete
Length
45 ft
1 main span
Daily traffic
508
2016 count
Owner
State
State Highway Agency

About this bridge

Parkgate Drive over Slate Run is a prestressed concrete slab carrying Parkgate Drive over Slate Run in Prince William County, Virginia. It was built in 1990, so it is 35 years old, younger than the Virginia average of 50.7 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 508 vehicles a day, projected to reach 700 by 2042. The structure is 45 ft (13.7 m) long and 28 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesParkgate Drive
CrossesSlate Run
Location00.40FR651 / 00.60TO649
RouteCounty Highway 653
CountyPrince William County
StateVirginia
Coordinates38.67064, -77.52344
Functional classRural Local

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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86.8 US tons
Inventory rating66.8 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length45 ft (13.7 m)
Longest span42 ft (12.8 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic508 (2016)
Projected traffic700 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$100 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Parkgate Drive over Slate Run built?

It was built in 1990, making it 35 years old in 2025.

What condition is Parkgate Drive over Slate Run 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 July 2024.

How much traffic does Parkgate Drive over Slate Run carry?

About 508 vehicles per day (2016 count).

How long is Parkgate Drive over Slate Run?

The structure is 45 ft (13.7 m) long with a longest span of 42 ft (12.8 m) and a deck 28 ft wide.

Who owns Parkgate Drive over Slate Run?

It is owned by the State Highway Agency.