Structure 100000010136040 · Allegany County, MD

Is 68 Ramp 6 over Pratt Hollow

Carries Is 68 Ramp 6 over Pratt Hollow, Rp Fr I 68 EB To US 40sc.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

57 ft end to end, longest span 15 ft. Lengths and the car 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 rigid-frame bridge.

Built199036 years old
Length56.8 ft17.3 m
Daily traffic9,992counted 1994
Last inspectedSeptember 2024every 24 months

Location

StateMaryland
CountyAllegany
LocationRp Fr I 68 EB To US 40sc
CarriesIs 68 Ramp 6
CrossesPratt Hollow
Coordinates39.67643, -78.46139

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length56.8 ft (17.3 m)
Max Span15.1 ft (4.6 m)
Deck Width28.9 ft (8.8 m)
Deck Area152.2 sq m
Main Spans3
Year Built1990

Traffic

Avg Daily Traffic9,992 (1994)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number100000010136040

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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