Structure 100000100140010 · Frederick County, MD

Is 70 Ramp A over Md 180

Carries Is 70 Ramp A over Md 180, 0.2 Mile East Of US 15.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT126 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

126 ft end to end, longest span 50 ft. 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.

Built1968rebuilt 1996
Length126.0 ft38.4 m
Daily traffic12,984counted 2006
Last inspectedOctober 2023every 24 months

Location

StateMaryland
CountyFrederick
Location0.2 Mile East Of US 15
CarriesIs 70 Ramp A
CrossesMd 180
Coordinates39.39907, -77.43736

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length126.0 ft (38.4 m)
Max Span49.9 ft (15.2 m)
Deck Width47.9 ft (14.6 m)
Deck Area560.6 sq m
Main Spans3
Year Built1968 (reconstructed 1996)

Traffic

Avg Daily Traffic12,984 (2006)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000100140010

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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