Structure 200000M-0080013 · Montgomery County, MD

Randolph Road (eb) over Rock Creek

Carries Randolph Road (eb) over Rock Creek, 1.5 Miles East Of Md 355.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

82 ft end to end, longest span 40 ft. 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.

Built1953rebuilt 1966
Length82.0 ft25 m
Daily traffic23,434counted 2022
Last inspectedJuly 2023every 24 months

Location

StateMaryland
CountyMontgomery
Location1.5 Miles East Of Md 355
CarriesRandolph Road (eb)
CrossesRock Creek
Coordinates39.05353, -77.09127

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length82.0 ft (25 m)
Max Span40.0 ft (12.2 m)
Deck Width45.6 ft (13.9 m)
Deck Area347.5 sq m
Main Spans2
Year Built1953 (reconstructed 1966)

Traffic

Avg Daily Traffic23,434 (2022)
Truck Traffic2%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200000M-0080013

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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