US Bridges

Route 28 NB over I-66

Good

Fairfax County, Virginia · 00.38FR66EB 00.10TO28NB · Structure no. 000000000031055

Built
2020
5 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
558 ft
5 main spans
Daily traffic
36,900
2022 count
Owner
State
State Highway Agency

About this bridge

Route 28 NB over I-66 is a prestressed concrete stringer/multi-beam or girder carrying Route 28 NB over I-66 in Fairfax County, Virginia. It was built in 2020, so it is 5 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 36,900 vehicles a day, roughly 1% of them trucks, projected to reach 53,875 by 2042. The structure is 558 ft (170.1 m) long and 106 ft wide.

Location

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CarriesRoute 28 NB
CrossesI-66
Location00.38FR66EB 00.10TO28NB
RouteState Highway 28
CountyFairfax County
StateVirginia
Coordinates38.8462, -77.43158
Functional classUrban Other Principal Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating83 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHL 93
Structure length558 ft (170.1 m)
Longest span138 ft (42.1 m)
Deck width106 ft (32.3 m)
Roadway width101 ft (30.8 m)
Vertical clearance over deck17 ft (5.2 m)

Traffic and service

Average daily traffic36,900 (2022)
Projected traffic53,875 by 2042
Trucks1%
Lanes on structure5
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Route 28 NB over I-66 built?

It was built in 2020, making it 5 years old in 2025.

What condition is Route 28 NB over I-66 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 June 2024.

How much traffic does Route 28 NB over I-66 carry?

About 36,900 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Route 28 NB over I-66?

The structure is 558 ft (170.1 m) long with a longest span of 138 ft (42.1 m) and a deck 106 ft wide.

Who owns Route 28 NB over I-66?

It is owned by the State Highway Agency.