Structure 100000100134014 · Frederick County, MD

Is 70 Wbr over Mt Tabor Road

Carries Is 70 Wbr over Mt Tabor Road, 1.15 Miles West Of Md 17.

Overall conditionFair

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT168 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

168 ft end to end, longest span 63 ft: about 2 semi-trucks nose to tail. 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.

Built196858 years old
Length168.0 ft51.2 m
Daily traffic71,007counted 2023
Last inspectedApril 2023every 24 months

Location

StateMaryland
CountyFrederick
Location1.15 Miles West Of Md 17
CarriesIs 70 Wbr
CrossesMt Tabor Road
Coordinates39.34019, -77.58450

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length168.0 ft (51.2 m)
Max Span63.0 ft (19.2 m)
Deck Width54.1 ft (16.5 m)
Deck Area844.8 sq m
Main Spans3
Year Built1968

Traffic

Avg Daily Traffic71,007 (2023)
Truck Traffic8%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000100134014

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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