Structure 100000100181012 · Frederick County, MD

US 15 Sbr over Md 15c

Carries US 15 Sbr over Md 15c, 0.77 Mile South Of Md 77.

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
CAR · 15 FT114 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

114 ft end to end. 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 girder bridge.

Built198541 years old
Length113.8 ft34.7 m
Daily traffic30,800counted 2009
Last inspectedFebruary 2024every 24 months

Location

StateMaryland
CountyFrederick
Location0.77 Mile South Of Md 77
CarriesUS 15 Sbr
CrossesMd 15c
Coordinates39.61483, -77.42012

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length113.8 ft (34.7 m)
Max Span108.9 ft (33.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area454.6 sq m
Main Spans1
Year Built1985

Traffic

Avg Daily Traffic30,800 (2009)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000100181012

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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