US Bridges

Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395

Fair

Fairfax County, Virginia · 01.5FRNQUAK/00.4TONBEAU · Structure no. 000000000019950

Built
1970
55 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
209 ft
3 main spans
Daily traffic
14,000
2022 count
Owner
State
State Highway Agency

About this bridge

Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395 is a steel stringer/multi-beam or girder carrying Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395 in Fairfax County, Virginia. It was built in 1970, so it is 55 years old, older 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 5 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 14,000 vehicles a day, roughly 3% of them trucks, projected to reach 20,160 by 2046. The structure is 209 ft (63.7 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSeminary Rd;ramp a
CrossesShirley MEM.HWY;RTE.395
Location01.5FRNQUAK/00.4TONBEAU
RouteInterstate 420
CountyFairfax County
StateVirginia
Coordinates38.82987, -77.11262
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating50.2 US tons
Inventory rating38.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length209 ft (63.7 m)
Longest span75 ft (22.9 m)
Deck width45 ft (13.7 m)
Roadway width39 ft (11.9 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic14,000 (2022)
Projected traffic20,160 by 2046
Trucks3%
Lanes on structure3
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed3.1 mi (5 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$194 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395 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 October 2024.

How much traffic does Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395 carry?

About 14,000 vehicles per day (2022 count), of which roughly 3% are trucks.

How long is Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395?

The structure is 209 ft (63.7 m) long with a longest span of 75 ft (22.9 m) and a deck 45 ft wide.

Who owns Seminary Rd;ramp a over Shirley MEM.HWY;RTE.395?

It is owned by the State Highway Agency.