Structure 200000B-0409010 · Baltimore County, MD

Gunpowder Road over Compass Run

Carries Gunpowder Road over Compass Run, 0.3 Mi S. Of Bcklysvil RD.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

23 ft end to end, longest span 11 ft. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 slab bridge.

Built1920rebuilt 1985
Length23.3 ft7.1 m
Daily traffic1,755counted 2023
Last inspectedMay 2023every 24 months

Location

StateMaryland
CountyBaltimore
Location0.3 Mi S. Of Bcklysvil RD
CarriesGunpowder Road
CrossesCompass Run
Coordinates39.63764, -76.78090

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length23.3 ft (7.1 m)
Max Span11.2 ft (3.4 m)
Deck Width22.0 ft (6.7 m)
Deck Area47.6 sq m
Main Spans2
Year Built1920 (reconstructed 1985)

Traffic

Avg Daily Traffic1,755 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure Number200000B-0409010

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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