US Bridges

Is 495 NW Ramp over Macarthur Boulevard

Fair

Montgomery County, Maryland · 0.58 MI E of Va Line · Structure no. 100000150143010

Built
1963
62 years old, rebuilt 1991
Condition
Fair
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
336 ft
4 main spans
Daily traffic
1,330
2023 count
Owner
State
State Highway Agency

About this bridge

Is 495 NW Ramp over Macarthur Boulevard is a steel stringer/multi-beam or girder carrying Is 495 NW Ramp over Macarthur Boulevard in Montgomery County, Maryland. It was built in 1963 and reconstructed in 1991, so it is 62 years old, older than the Maryland average of 52.6 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 1,330 vehicles a day, roughly 8% of them trucks, projected to reach 1,225 by 2043. The structure is 336 ft (102.4 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 495 NW Ramp
CrossesMacarthur Boulevard
Location0.58 MI E of Va Line
RouteInterstate 495
CountyMontgomery County
StateMaryland
Coordinates38.97601, -77.17853
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43 US tons
Inventory rating25.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length336 ft (102.4 m)
Longest span107 ft (32.6 m)
Deck width28 ft (8.6 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,330 (2023)
Projected traffic1,225 by 2043
Trucks8%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$626,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 495 NW Ramp over Macarthur Boulevard built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1991.

What condition is Is 495 NW Ramp over Macarthur Boulevard 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 2024.

How much traffic does Is 495 NW Ramp over Macarthur Boulevard carry?

About 1,330 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Is 495 NW Ramp over Macarthur Boulevard?

The structure is 336 ft (102.4 m) long with a longest span of 107 ft (32.6 m) and a deck 28 ft wide.

Who owns Is 495 NW Ramp over Macarthur Boulevard?

It is owned by the State Highway Agency.