US Bridges

Algonkian Parkway over Sugarland Run

Good

Loudoun County, Virginia · 00.50FR637/02.70TO7 · Structure no. 000000000023127

Built
1990
35 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
448 ft
4 main spans
Daily traffic
19,332
2022 count
Owner
State
State Highway Agency

About this bridge

Algonkian Parkway over Sugarland Run is a steel continuous stringer/multi-beam or girder carrying Algonkian Parkway over Sugarland Run in Loudoun 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 19,332 vehicles a day, roughly 1% of them trucks, projected to reach 26,941 by 2042. The structure is 448 ft (136.6 m) long and 70 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesAlgonkian Parkway
CrossesSugarland Run
Location00.50FR637/02.70TO7
RouteCounty Highway 1582
CountyLoudoun County
StateVirginia
Coordinates39.04482, -77.36457
Functional classUrban Minor 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.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating96.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length448 ft (136.6 m)
Longest span140 ft (42.7 m)
Deck width70 ft (21.3 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,332 (2022)
Projected traffic26,941 by 2042
Trucks1%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 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$225 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Algonkian Parkway over Sugarland Run built?

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

What condition is Algonkian Parkway over Sugarland 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 June 2024.

How much traffic does Algonkian Parkway over Sugarland Run carry?

About 19,332 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Algonkian Parkway over Sugarland Run?

The structure is 448 ft (136.6 m) long with a longest span of 140 ft (42.7 m) and a deck 70 ft wide.

Who owns Algonkian Parkway over Sugarland Run?

It is owned by the State Highway Agency.