US Bridges

James Monroe NB over Dry Run

Fair

Loudoun County, Virginia · 00.14FR644/01.75TO773 · Structure no. 000000000011100

Built
1966
59 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
4,160
2022 count
Owner
State
State Highway Agency

About this bridge

James Monroe NB over Dry Run is a concrete culvert carrying James Monroe NB over Dry Run in Loudoun County, Virginia. It was built in 1966, so it is 59 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 4,160 vehicles a day, roughly 3% of them trucks, projected to reach 6,074 by 2042. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesJames Monroe NB
CrossesDry Run
Location00.14FR644/01.75TO773
RouteU.S. Route 15
CountyLoudoun County
StateVirginia
Coordinates39.13732, -77.54751
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 protection6 SatisfactoryStructural elements show some minor deterioration.
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 rating78 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 traffic4,160 (2022)
Projected traffic6,074 by 2042
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 James Monroe NB over Dry Run built?

It was built in 1966, making it 59 years old in 2025.

What condition is James Monroe NB over Dry Run 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 James Monroe NB over Dry Run carry?

About 4,160 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is James Monroe NB over Dry Run?

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

Who owns James Monroe NB over Dry Run?

It is owned by the State Highway Agency.