US Bridges

Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata

Fair

Fairfax County, Virginia · .25 MI.FR267/.10MI.TO Lot · Structure no. 000000000025075

Built
1999
26 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
615 ft
6 main spans
Daily traffic
1,000
1999 count
Owner
State
State Highway Agency

About this bridge

Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata is a steel continuous stringer/multi-beam or girder carrying Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata in Fairfax County, Virginia. It was built in 1999, so it is 26 years old, younger 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 1,000 vehicles a day, projected to reach 2,000 by 2042. The structure is 615 ft (187.5 m) long and 33 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHerndon/Monroe Rmp
CrossesToll RD.267 / Dar&wmata
Location.25 MI.FR267/.10MI.TO Lot
CountyFairfax County
StateVirginia
Coordinates38.95156, -77.38386
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Last inspectionJune 2023
Inspection intervalevery 23 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 alignment7: Better than present minimum criteria
Operating rating51.4 US tons
Inventory rating39.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans6 (+3 approach)
Design loadHS 20
Structure length615 ft (187.5 m)
Longest span109 ft (33.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (1999)
Projected traffic2,000 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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$250 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata built?

It was built in 1999, making it 26 years old in 2025.

What condition is Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata 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 June 2023.

How much traffic does Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata carry?

About 1,000 vehicles per day (1999 count).

How long is Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata?

The structure is 615 ft (187.5 m) long with a longest span of 109 ft (33.2 m) and a deck 33 ft wide.

Who owns Herndon/Monroe Rmp over Toll RD.267 / Dar&wmata?

It is owned by the State Highway Agency.