Structure 100000100131013 · Frederick County, MD

Is 70 Ebr over US 40al

Carries Is 70 Ebr over US 40al, 0.28 M E Of Br No 1014500.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT230 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

230 ft end to end, longest span 112 ft: about 3 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.

Built196759 years old
Length230.0 ft70.1 m
Daily traffic74,920counted 2009
Last inspectedApril 2024every 24 months

Location

StateMaryland
CountyFrederick
Location0.28 M E Of Br No 1014500
CarriesIs 70 Ebr
CrossesUS 40al
Coordinates39.42211, -77.48606

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length230.0 ft (70.1 m)
Max Span111.9 ft (34.1 m)
Deck Width42.0 ft (12.8 m)
Deck Area897.3 sq m
Main Spans2
Year Built1967

Traffic

Avg Daily Traffic74,920 (2009)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000100131013

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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