Structure 100000150150014 · Montgomery County, MD

Is 370 Wbr over Crabbs Branch Way

Carries Is 370 Wbr over Crabbs Branch Way, 5.84 Mile West Of Md 97.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT89 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

89 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built201016 years old
Length88.9 ft27.1 m
Daily traffic78,741counted 2009
Last inspectedMay 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location5.84 Mile West Of Md 97
CarriesIs 370 Wbr
CrossesCrabbs Branch Way
Coordinates39.13189, -77.16998

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length88.9 ft (27.1 m)
Max Span86.0 ft (26.2 m)
Deck Width84.0 ft (25.6 m)
Deck Area693.8 sq m
Main Spans1
Year Built2010

Traffic

Avg Daily Traffic78,741 (2009)
Truck Traffic7%
Lanes On Bridge5
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000150150014

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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