US Bridges

Downey Mill Road over Br. of Catoctin Creek

Fair

Loudoun County, Virginia · 00.90FR799/00.60TO668 · Structure no. 000000000024983

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
59
2014 count
Owner
State
State Highway Agency

About this bridge

Downey Mill Road over Br. of Catoctin Creek is a wood or timber slab carrying Downey Mill Road over Br. of Catoctin Creek in Loudoun County, Virginia. It was built in 1971, so it is 54 years old, older 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 59 vehicles a day, projected to reach 68 by 2045. The structure is 26 ft (7.9 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesDowney Mill Road
CrossesBr. of Catoctin Creek
Location00.90FR799/00.60TO668
RouteCounty Highway 663
CountyLoudoun County
StateVirginia
Coordinates39.25148, -77.58352
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating85.3 US tons
Inventory rating59 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span23 ft (7 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic59 (2014)
Projected traffic68 by 2045
Trucks0%
Lanes on structure2
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$50 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Downey Mill Road over Br. of Catoctin Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is Downey Mill Road over Br. of Catoctin Creek 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 August 2023.

How much traffic does Downey Mill Road over Br. of Catoctin Creek carry?

About 59 vehicles per day (2014 count).

How long is Downey Mill Road over Br. of Catoctin Creek?

The structure is 26 ft (7.9 m) long with a longest span of 23 ft (7 m) and a deck 25 ft wide.

Who owns Downey Mill Road over Br. of Catoctin Creek?

It is owned by the State Highway Agency.