Structure 200000M-R-01010 · Montgomery County, MD

Edmonston Drive over Csxt Rr & Wmata Metro

Carries Edmonston Drive over Csxt Rr & Wmata Metro, 0.05 Miles East Of Md 355.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT123 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

123 ft end to end, longest span 43 ft. Lengths and the semi-truck 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.

Built198145 years old
Length123.0 ft37.5 m
Daily traffic10,524counted 2022
Last inspectedSeptember 2024every 24 months

Location

StateMaryland
CountyMontgomery
Location0.05 Miles East Of Md 355
CarriesEdmonston Drive
CrossesCsxt Rr & Wmata Metro
Coordinates39.07463, -77.13506

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length123.0 ft (37.5 m)
Max Span43.0 ft (13.1 m)
Deck Width49.9 ft (15.2 m)
Deck Area570 sq m
Main Spans3
Year Built1981

Traffic

Avg Daily Traffic10,524 (2022)
Truck Traffic3%
Lanes On Bridge3

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000M-R-01010

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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