Structure 300000M-V161013 · Montgomery County, MD

Md 200 (icc) EB over Ramp NW

Carries Md 200 (icc) EB over Ramp NW, 0.6 Mi W Of Briggs Chaney.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

94 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.

Built201115 years old
Length93.5 ft28.5 m
Daily traffic22,682counted 2019
Last inspectedSeptember 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location0.6 Mi W Of Briggs Chaney
CarriesMd 200 (icc) EB
CrossesRamp NW
Coordinates39.07655, -76.95028

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length93.5 ft (28.5 m)
Max Span87.9 ft (26.8 m)
Deck Width61.0 ft (18.6 m)
Deck Area530.1 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic22,682 (2019)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number300000M-V161013

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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