US Bridges

Cascades Parkway over Lake Overflow

Fair

Loudoun County, Virginia · 00.20FR7/00.20TO1795 · Structure no. 000000000023393

Built
1991
34 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
14,450
2022 count
Owner
State
State Highway Agency

About this bridge

Cascades Parkway over Lake Overflow is a concrete culvert carrying Cascades Parkway over Lake Overflow in Loudoun County, Virginia. It was built in 1991, so it is 34 years old, younger than the Virginia average of 50.7 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 14,450 vehicles a day, projected to reach 16,112 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCascades Parkway
CrossesLake Overflow
Location00.20FR7/00.20TO1795
RouteCounty Highway 1794
CountyLoudoun County
StateVirginia
Coordinates39.03329, -77.40095
Functional classUrban Minor Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating98.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic14,450 (2022)
Projected traffic16,112 by 2042
Trucks0%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$120 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Cascades Parkway over Lake Overflow built?

It was built in 1991, making it 34 years old in 2025.

What condition is Cascades Parkway over Lake Overflow 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 July 2024.

How much traffic does Cascades Parkway over Lake Overflow carry?

About 14,450 vehicles per day (2022 count).

How long is Cascades Parkway over Lake Overflow?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns Cascades Parkway over Lake Overflow?

It is owned by the State Highway Agency.