US Bridges

Cascades Parkway over Trib. Cabin Branch

Good

Loudoun County, Virginia · 00.60FR625/00.05TO679 · Structure no. 000000000024644

Built
1994
31 years old
Condition
Good
inspected April 2024
Type
Culvert
Concrete
Length
21 ft
3 main spans
Daily traffic
26,148
2018 count
Owner
State
State Highway Agency

About this bridge

Cascades Parkway over Trib. Cabin Branch is a concrete culvert carrying Cascades Parkway over Trib. Cabin Branch in Loudoun County, Virginia. It was built in 1994, so it is 31 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 26,148 vehicles a day, roughly 3% of them trucks, projected to reach 38,788 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesCascades Parkway
CrossesTrib. Cabin Branch
Location00.60FR625/00.05TO679
RouteCounty Highway 637
CountyLoudoun County
StateVirginia
Coordinates39.01503, -77.41336
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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,148 (2018)
Projected traffic38,788 by 2042
Trucks3%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$175 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Cascades Parkway over Trib. Cabin Branch built?

It was built in 1994, making it 31 years old in 2025.

What condition is Cascades Parkway over Trib. Cabin Branch 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 2024.

How much traffic does Cascades Parkway over Trib. Cabin Branch carry?

About 26,148 vehicles per day (2018 count), of which roughly 3% are trucks.

How long is Cascades Parkway over Trib. Cabin Branch?

The structure is 21 ft (6.4 m) long with a longest span of 7 ft (2.1 m).

Who owns Cascades Parkway over Trib. Cabin Branch?

It is owned by the State Highway Agency.