US Bridges

Is 495 & Ramp K(4) over Is 495X & C J CR

Fair

Montgomery County, Maryland · 0.49 Mile West of Md 190 · Structure no. 100000150108010

Built
1962
63 years old, rebuilt 1991
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
354 ft
5 main spans
Daily traffic
214,005
2009 count
Owner
State
State Highway Agency

About this bridge

Is 495 & Ramp K(4) over Is 495X & C J CR is a steel stringer/multi-beam or girder carrying Is 495 & Ramp K(4) over Is 495X & C J CR in Montgomery County, Maryland. It was built in 1962 and reconstructed in 1991, so it is 63 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 214,005 vehicles a day, roughly 8% of them trucks, projected to reach 263,471 by 2038. The structure is 354 ft (107.9 m) long and 156 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIs 495 & Ramp K(4)
CrossesIs 495X & C J CR
Location0.49 Mile West of Md 190
RouteInterstate 495
CountyMontgomery County
StateMaryland
Coordinates38.98436, -77.1592
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.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating70.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length354 ft (107.9 m)
Longest span83 ft (25.3 m)
Deck width156 ft (47.6 m)
Roadway width152 ft (46.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic214,005 (2009)
Projected traffic263,471 by 2038
Trucks8%
Lanes on structure8
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
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$3.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Is 495 & Ramp K(4) over Is 495X & C J CR built?

It was built in 1962, making it 63 years old in 2025. It was reconstructed in 1991.

What condition is Is 495 & Ramp K(4) over Is 495X & C J CR 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 May 2024.

How much traffic does Is 495 & Ramp K(4) over Is 495X & C J CR carry?

About 214,005 vehicles per day (2009 count), of which roughly 8% are trucks.

How long is Is 495 & Ramp K(4) over Is 495X & C J CR?

The structure is 354 ft (107.9 m) long with a longest span of 83 ft (25.3 m) and a deck 156 ft wide.

Who owns Is 495 & Ramp K(4) over Is 495X & C J CR?

It is owned by the State Highway Agency.