US Bridges

Route 28 SB Cd over I-66

Good

Fairfax County, Virginia · 00.30FR66 00.50TO29 · Structure no. 000000000031053

Built
2021
4 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
404 ft
4 main spans
Daily traffic
6,097
2022 count
Owner
State
State Highway Agency

About this bridge

Route 28 SB Cd over I-66 is a prestressed concrete stringer/multi-beam or girder carrying Route 28 SB Cd over I-66 in Fairfax County, Virginia. It was built in 2021, so it is 4 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 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,097 vehicles a day, roughly 1% of them trucks, projected to reach 8,903 by 2045. The structure is 404 ft (123.1 m) long and 57 ft wide.

Location

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CarriesRoute 28 SB Cd
CrossesI-66
Location00.30FR66 00.50TO29
RouteInterstate 28
CountyFairfax County
StateVirginia
Coordinates38.84678, -77.43271
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
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation9: Superior to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment7: Better than present minimum criteria
Operating rating65 US tons
Inventory rating50.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length404 ft (123.1 m)
Longest span139 ft (42.4 m)
Deck width57 ft (17.4 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic6,097 (2022)
Projected traffic8,903 by 2045
Trucks1%
Lanes on structure7
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 SB Cd over I-66 built?

It was built in 2021, making it 4 years old in 2025.

What condition is Route 28 SB Cd 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 March 2023.

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

About 6,097 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is Route 28 SB Cd over I-66?

The structure is 404 ft (123.1 m) long with a longest span of 139 ft (42.4 m) and a deck 57 ft wide.

Who owns Route 28 SB Cd over I-66?

It is owned by the State Highway Agency.