US Bridges

Is 370 Wbr over Crabbs Branch Way

Good

Montgomery County, Maryland · 5.84 Mile West of Md 97 · Structure no. 100000150150014

Built
2010
15 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
89 ft
1 main span
Daily traffic
78,741
2009 count
Owner
State
State Highway Agency

About this bridge

Is 370 Wbr over Crabbs Branch Way is a prestressed concrete stringer/multi-beam or girder carrying Is 370 Wbr over Crabbs Branch Way in Montgomery County, Maryland. It was built in 2010, so it is 15 years old, younger than the Maryland average of 52.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 78,741 vehicles a day, roughly 7% of them trucks, projected to reach 58,500 by 2030. The structure is 89 ft (27.1 m) long and 84 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIs 370 Wbr
CrossesCrabbs Branch Way
Location5.84 Mile West of Md 97
RouteInterstate 370
Coordinates39.13189, -77.16998
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating82 US tons
Inventory rating48.9 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length89 ft (27.1 m)
Longest span86 ft (26.2 m)
Deck width84 ft (25.6 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic78,741 (2009)
Projected traffic58,500 by 2030
Trucks7%
Lanes on structure5
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Is 370 Wbr over Crabbs Branch Way built?

It was built in 2010, making it 15 years old in 2025.

What condition is Is 370 Wbr over Crabbs Branch Way in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in May 2023.

How much traffic does Is 370 Wbr over Crabbs Branch Way carry?

About 78,741 vehicles per day (2009 count), of which roughly 7% are trucks.

How long is Is 370 Wbr over Crabbs Branch Way?

The structure is 89 ft (27.1 m) long with a longest span of 86 ft (26.2 m) and a deck 84 ft wide.

Who owns Is 370 Wbr over Crabbs Branch Way?

It is owned by the State Highway Agency.