US Bridges

MCB-3 over Darrells Run

Good

Prince William County, Virginia · 0.2 Miles East of SR-612 · Structure no. 2VA00MM

Built
1994
31 years old
Condition
Good
inspected September 2023
Type
Slab
Prestressed Concrete
Length
25 ft
1 main span
Daily traffic
500
2015 count
Owner
Federal
Navy / Marines

About this bridge

MCB-3 over Darrells Run is a prestressed concrete slab carrying MCB-3 over Darrells Run in Prince William 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 500 vehicles a day, roughly 10% of them trucks, projected to reach 600 by 2043. The structure is 25 ft (7.7 m) long and 28 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Location

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CarriesMCB-3
CrossesDarrells Run
Location0.2 Miles East of SR-612
CountyPrince William County
StateVirginia
Coordinates38.57214, -77.56114
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating33.6 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width28 ft (8.5 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2015)
Projected traffic600 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerNavy / Marines
Maintained byNavy / Marines
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$23,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was MCB-3 over Darrells Run built?

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

What condition is MCB-3 over Darrells Run 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 September 2023.

How much traffic does MCB-3 over Darrells Run carry?

About 500 vehicles per day (2015 count), of which roughly 10% are trucks.

How long is MCB-3 over Darrells Run?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m) and a deck 28 ft wide.

Who owns MCB-3 over Darrells Run?

It is owned by the Navy / Marines.