Structure 200000M-0257010 · Montgomery County, MD

Washingtonian Boul over Sam Eig Highway

Carries Washingtonian Boul over Sam Eig Highway, 0.5 Miles West Of I-270.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT180 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

180 ft end to end, longest span 87 ft: about 3 semi-trucks nose to tail. 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.

Built199828 years old
Length180.1 ft54.9 m
Daily traffic9,998counted 2021
Last inspectedAugust 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location0.5 Miles West Of I-270
CarriesWashingtonian Boul
CrossesSam Eig Highway
Coordinates39.11767, -77.20594

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length180.1 ft (54.9 m)
Max Span86.9 ft (26.5 m)
Deck Width69.2 ft (21.1 m)
Deck Area1158.4 sq m
Main Spans2
Year Built1998

Traffic

Avg Daily Traffic9,998 (2021)
Truck Traffic5%
Lanes On Bridge4
Lanes Under Bridge6

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000M-0257010

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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