US Bridges

North Nash St. over I-66_ROSSLYN Tunnel

Fair

Arlington County, Virginia · 00.01FR29SB/00.01TO29NB · Structure no. 000000000000069

Built
1983
42 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
103 ft
2 main spans
Daily traffic
2,103
2022 count
Owner
State
State Highway Agency

About this bridge

North Nash St. over I-66_ROSSLYN Tunnel is a steel stringer/multi-beam or girder carrying North Nash St. over I-66_ROSSLYN Tunnel in Arlington County, Virginia. It was built in 1983, so it is 42 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 2,103 vehicles a day, roughly 1% of them trucks, projected to reach 2,345 by 2045. The structure is 103 ft (31.4 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesNorth Nash St.
CrossesI-66_ROSSLYN Tunnel
Location00.01FR29SB/00.01TO29NB
RouteCounty Highway 0
CountyArlington County
StateVirginia
Coordinates38.89853, -77.0736
Functional classUrban Collector

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 23 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating85.3 US tons
Inventory rating65.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span52 ft (15.8 m)
Deck width50 ft (15.3 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,103 (2022)
Projected traffic2,345 by 2045
Trucks1%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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$450 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was North Nash St. over I-66_ROSSLYN Tunnel built?

It was built in 1983, making it 42 years old in 2025.

What condition is North Nash St. over I-66_ROSSLYN Tunnel 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 June 2023.

How much traffic does North Nash St. over I-66_ROSSLYN Tunnel carry?

About 2,103 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is North Nash St. over I-66_ROSSLYN Tunnel?

The structure is 103 ft (31.4 m) long with a longest span of 52 ft (15.8 m) and a deck 50 ft wide.

Who owns North Nash St. over I-66_ROSSLYN Tunnel?

It is owned by the State Highway Agency.