US Bridges

Is 495 over Macarthur Blvd Cb Pkwy

Fair

Montgomery County, Maryland · 0.52 Mile East of Va Line · Structure no. 100000150104010

Built
1963
62 years old, rebuilt 1991
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
607 ft
6 main spans
Daily traffic
212,410
2024 count
Owner
State
State Highway Agency

About this bridge

Is 495 over Macarthur Blvd Cb Pkwy is a steel stringer/multi-beam or girder carrying Is 495 over Macarthur Blvd Cb Pkwy 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 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 212,410 vehicles a day, roughly 8% of them trucks, projected to reach 196,441 by 2044. The structure is 607 ft (185 m) long and 150 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 495
CrossesMacarthur Blvd Cb Pkwy
Location0.52 Mile East of Va Line
RouteInterstate 495
CountyMontgomery County
StateMaryland
Coordinates38.97435, -77.17837
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82.5 US tons
Inventory rating49.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20 + Mod
Structure length607 ft (185 m)
Longest span109 ft (33.2 m)
Deck width150 ft (45.8 m)
Roadway width146 ft (44.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic212,410 (2024)
Projected traffic196,441 by 2044
Trucks8%
Lanes on structure9
Traffic directionTwo-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$6 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 495 over Macarthur Blvd Cb Pkwy built?

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

What condition is Is 495 over Macarthur Blvd Cb Pkwy 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 July 2024.

How much traffic does Is 495 over Macarthur Blvd Cb Pkwy carry?

About 212,410 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is Is 495 over Macarthur Blvd Cb Pkwy?

The structure is 607 ft (185 m) long with a longest span of 109 ft (33.2 m) and a deck 150 ft wide.

Who owns Is 495 over Macarthur Blvd Cb Pkwy?

It is owned by the State Highway Agency.