US Bridges

Rte. 28 SB over Dulles Access Road

Good

Loudoun County, Virginia · 02.10FR668 / 01.21TO606 · Structure no. 000000000011108

Built
1988
37 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
387 ft
6 main spans
Daily traffic
93,735
2022 count
Owner
State
State Highway Agency

About this bridge

Rte. 28 SB over Dulles Access Road is a steel stringer/multi-beam or girder carrying Rte. 28 SB over Dulles Access Road in Loudoun County, Virginia. It was built in 1988, so it is 37 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 93,735 vehicles a day, roughly 4% of them trucks, projected to reach 62,047 by 2042. The structure is 387 ft (118 m) long and 85 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesRte. 28 SB
CrossesDulles Access Road
Location02.10FR668 / 01.21TO606
RouteState Highway 28
CountyLoudoun County
StateVirginia
Coordinates38.962, -77.42763
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67.1 US tons
Inventory rating51.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length387 ft (118 m)
Longest span77 ft (23.5 m)
Deck width85 ft (25.9 m)
Roadway width82 ft (25 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic93,735 (2022)
Projected traffic62,047 by 2042
Trucks4%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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$405 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Rte. 28 SB over Dulles Access Road built?

It was built in 1988, making it 37 years old in 2025.

What condition is Rte. 28 SB over Dulles Access Road 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 August 2024.

How much traffic does Rte. 28 SB over Dulles Access Road carry?

About 93,735 vehicles per day (2022 count), of which roughly 4% are trucks.

How long is Rte. 28 SB over Dulles Access Road?

The structure is 387 ft (118 m) long with a longest span of 77 ft (23.5 m) and a deck 85 ft wide.

Who owns Rte. 28 SB over Dulles Access Road?

It is owned by the State Highway Agency.