Structure 100000060031040 · Carroll County, MD

Md 97 over Big Pipe Creek

Carries Md 97 over Big Pipe Creek, 3.35 Mile North Of Md 496.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT79 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

79 ft end to end, longest span 35 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.

Built193492 years old
Length78.7 ft24 m
Daily traffic15,340counted 2009
Last inspectedOctober 2024every 24 months

Location

StateMaryland
CountyCarroll
Location3.35 Mile North Of Md 496
CarriesMd 97
CrossesBig Pipe Creek
Coordinates39.66716, -77.01977

Physical Characteristics

MaterialConcrete Continuous
DesignFrame
Total Length78.7 ft (24 m)
Max Span35.1 ft (10.7 m)
Deck Width33.8 ft (10.3 m)
Deck Area247.2 sq m
Main Spans2
Year Built1934

Traffic

Avg Daily Traffic15,340 (2009)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number100000060031040

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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