Structure 200000A-C-10010 · Allegany County, MD

Marion Street over I-68

Carries Marion Street over I-68, 0.23 Mi W Of Md 639.

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 FT312 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

312 ft end to end, longest span 102 ft: about 4 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.

Built1968rebuilt 2008
Length312.0 ft95.1 m
Daily traffic30,530counted 2019
Last inspectedNovember 2023every 24 months

Location

StateMaryland
CountyAllegany
Location0.23 Mi W Of Md 639
CarriesMarion Street
CrossesI-68
Coordinates39.65399, -78.75067

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length312.0 ft (95.1 m)
Max Span102.0 ft (31.1 m)
Deck Width34.1 ft (10.4 m)
Deck Area989.0 sq m
Main Spans3
Year Built1968 (reconstructed 2008)

Traffic

Avg Daily Traffic30,530 (2019)
Truck Traffic23%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number200000A-C-10010

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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