Structure 200000M-0204020 · Montgomery County, MD

Randolph Road over Northwest Branch

Carries Randolph Road over Northwest Branch, 0.1 Mi E Of Kemp Mill RD.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT75 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 75 ft across. 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, so those are drawn as typical for a culvert.

Built197650 years old
Length75.1 ft22.9 m
Daily traffic60,342counted 2019
Last inspectedMarch 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location0.1 Mi E Of Kemp Mill RD
CarriesRandolph Road
CrossesNorthwest Branch
Coordinates39.06629, -77.02958

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length75.1 ft (22.9 m)
Max Span18.0 ft (5.5 m)
Deck Area531.3 sq m
Year Built1976

Traffic

Avg Daily Traffic60,342 (2019)
Truck Traffic10%
Lanes On Bridge6

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200000M-0204020

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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