US Bridges

I-95N to I-395N over RTE.644 Old Keene Mill

Good

Fairfax County, Virginia · 02.69FR7100/01.83TO648 · Structure no. 000000000025855

Built
2000
25 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
173 ft
2 main spans
Daily traffic
86,915
2022 count
Owner
State
State Highway Agency

About this bridge

I-95N to I-395N over RTE.644 Old Keene Mill is a prestressed concrete continuous stringer/multi-beam or girder carrying I-95N to I-395N over RTE.644 Old Keene Mill in Fairfax County, Virginia. It was built in 2000, so it is 25 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 86,915 vehicles a day, roughly 1% of them trucks, projected to reach 113,273 by 2045. The structure is 173 ft (52.7 m) long and 108 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesI-95N to I-395N
CrossesRTE.644 Old Keene Mill
Location02.69FR7100/01.83TO648
RouteInterstate 395
CountyFairfax County
StateVirginia
Coordinates38.77827, -77.17965
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.6 US tons
Inventory rating28 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length173 ft (52.7 m)
Longest span87 ft (26.5 m)
Deck width108 ft (32.9 m)
Roadway width105 ft (31.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic86,915 (2022)
Projected traffic113,273 by 2045
Trucks1%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$250 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-95N to I-395N over RTE.644 Old Keene Mill built?

It was built in 2000, making it 25 years old in 2025.

What condition is I-95N to I-395N over RTE.644 Old Keene Mill 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 2023.

How much traffic does I-95N to I-395N over RTE.644 Old Keene Mill carry?

About 86,915 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is I-95N to I-395N over RTE.644 Old Keene Mill?

The structure is 173 ft (52.7 m) long with a longest span of 87 ft (26.5 m) and a deck 108 ft wide.

Who owns I-95N to I-395N over RTE.644 Old Keene Mill?

It is owned by the State Highway Agency.