Structure 100000100145013 · Frederick County, MD

Is 70 Ebr over Is 70 Ramp E

Carries Is 70 Ebr over Is 70 Ramp E, 0.28 Mile West Of US 40al.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT183 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

183 ft end to end, longest span 67 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.

Built196957 years old
Length183.1 ft55.8 m
Daily traffic68,800counted 2009
Last inspectedJune 2024every 24 months

Location

StateMaryland
CountyFrederick
Location0.28 Mile West Of US 40al
CarriesIs 70 Ebr
CrossesIs 70 Ramp E
Coordinates39.42566, -77.48854

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length183.1 ft (55.8 m)
Max Span66.9 ft (20.4 m)
Deck Width42.0 ft (12.8 m)
Deck Area714.2 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic68,800 (2009)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number100000100145013

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.

Nearby Bridges