Structure 100000150110010 · Montgomery County, MD

Md 190 over Is 495

Carries Md 190 over Is 495, 1.19 Miles West Of Md 188.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT314 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

314 ft end to end, longest span 86 ft: about 4 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.

Built1962rebuilt 2006
Length314.0 ft95.7 m
Daily traffic22,022counted 2018
Last inspectedOctober 2024every 24 months

Location

StateMaryland
CountyMontgomery
Location1.19 Miles West Of Md 188
CarriesMd 190
CrossesIs 495
Coordinates38.99107, -77.15782

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length314.0 ft (95.7 m)
Max Span86.0 ft (26.2 m)
Deck Width101.4 ft (30.9 m)
Deck Area2957.1 sq m
Main Spans4
Year Built1962 (reconstructed 2006)

Traffic

Avg Daily Traffic22,022 (2018)
Truck Traffic8%
Lanes On Bridge6
Lanes Under Bridge10

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000150110010

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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