US Bridges

234 Bypass Nbl over I-66

Fair

Prince William County, Virginia · 00.60FR66/00.80TO621 · Structure no. 000000000024788

Built
1997
28 years old
Condition
Fair
inspected December 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
359 ft
2 main spans
Daily traffic
5,954
2022 count
Owner
State
State Highway Agency

About this bridge

234 Bypass Nbl over I-66 is a steel continuous stringer/multi-beam or girder carrying 234 Bypass Nbl over I-66 in Prince William County, Virginia. It was built in 1997, so it is 28 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 5,954 vehicles a day, projected to reach 8,694 by 2042. The structure is 359 ft (109.4 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries234 Bypass Nbl
CrossesI-66
Location00.60FR66/00.80TO621
RouteInterstate 234
CountyPrince William County
StateVirginia
Coordinates38.79751, -77.57135
Functional classUrban Principal Arterial - Interstate

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 inspectionDecember 2023
Inspection intervalevery 22 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.3 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length359 ft (109.4 m)
Longest span187 ft (57 m)
Deck width55 ft (16.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,954 (2022)
Projected traffic8,694 by 2042
Trucks0%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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
NavigationNot applicable (no waterway)

Frequently asked questions

When was 234 Bypass Nbl over I-66 built?

It was built in 1997, making it 28 years old in 2025.

What condition is 234 Bypass Nbl over I-66 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 December 2023.

How much traffic does 234 Bypass Nbl over I-66 carry?

About 5,954 vehicles per day (2022 count).

How long is 234 Bypass Nbl over I-66?

The structure is 359 ft (109.4 m) long with a longest span of 187 ft (57 m) and a deck 55 ft wide.

Who owns 234 Bypass Nbl over I-66?

It is owned by the State Highway Agency.