US Bridges

John S Mosby HWY over Cromwells Run

Fair

Fauquier County, Virginia · 00.41FR611/01.08TO754 · Structure no. 000000000007174

Built
1948
77 years old
Condition
Fair
inspected March 2024
Type
Arch - Deck
Concrete
Length
44 ft
1 main span
Daily traffic
8,145
2022 count
Owner
State
State Highway Agency

About this bridge

John S Mosby HWY over Cromwells Run is a concrete arch - deck carrying John S Mosby HWY over Cromwells Run in Fauquier County, Virginia. It was built in 1948, so it is 77 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 5 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 8,145 vehicles a day, roughly 1% of them trucks, projected to reach 9,082 by 2042. The structure is 44 ft (13.4 m) long and 70 ft wide. If it were closed, the detour would be 34.2 mi (55 km).

Location

Open in Google Maps
CarriesJohn S Mosby HWY
CrossesCromwells Run
Location00.41FR611/01.08TO754
RouteU.S. Route 50
CountyFauquier County
StateVirginia
Coordinates38.97229, -77.79074
Functional classRural 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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating90.6 US tons
Inventory rating56.5 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span40 ft (12.2 m)
Deck width70 ft (21.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,145 (2022)
Projected traffic9,082 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.2 mi (55 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.5 million
NavigationNo navigation control on waterway

Frequently asked questions

When was John S Mosby HWY over Cromwells Run built?

It was built in 1948, making it 77 years old in 2025.

What condition is John S Mosby HWY over Cromwells 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 March 2024.

How much traffic does John S Mosby HWY over Cromwells Run carry?

About 8,145 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is John S Mosby HWY over Cromwells Run?

The structure is 44 ft (13.4 m) long with a longest span of 40 ft (12.2 m) and a deck 70 ft wide.

Who owns John S Mosby HWY over Cromwells Run?

It is owned by the State Highway Agency.