US Bridges

Lee Highway over Big Rocky Run

Good

Fairfax County, Virginia · 00.40FR662/00.90TO28 · Structure no. 000000000026288

Built
1999
26 years old
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
143 ft
2 main spans
Daily traffic
23,044
2022 count
Owner
State
State Highway Agency

About this bridge

Lee Highway over Big Rocky Run is a steel continuous stringer/multi-beam or girder carrying Lee Highway over Big Rocky Run 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 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 23,044 vehicles a day, projected to reach 33,644 by 2042. The structure is 143 ft (43.6 m) long and 142 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesLee Highway
CrossesBig Rocky Run
Location00.40FR662/00.90TO28
RouteU.S. Route 29
Coordinates38.83636, -77.44996
Functional classUrban Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.3 US tons
Inventory rating43.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length143 ft (43.6 m)
Longest span83 ft (25.3 m)
Deck width142 ft (43.2 m)
Roadway width103 ft (31.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,044 (2022)
Projected traffic33,644 by 2042
Trucks0%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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$112 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Lee Highway over Big Rocky Run built?

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

What condition is Lee Highway over Big Rocky Run 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 Lee Highway over Big Rocky Run carry?

About 23,044 vehicles per day (2022 count).

How long is Lee Highway over Big Rocky Run?

The structure is 143 ft (43.6 m) long with a longest span of 83 ft (25.3 m) and a deck 142 ft wide.

Who owns Lee Highway over Big Rocky Run?

It is owned by the State Highway Agency.