Structure 200000CL0225010 · Carroll County, MD

Trevanion Road over Big Pipe Creek

Carries Trevanion Road over Big Pipe Creek, 2.05 Miles N Of Md 84.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT183 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

183 ft end to end, longest span 69 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.

Built196660 years old
Length183.4 ft55.9 m
Daily traffic2,569counted 2021
Last inspectedSeptember 2023every 24 months

Location

StateMaryland
CountyCarroll
Location2.05 Miles N Of Md 84
CarriesTrevanion Road
CrossesBig Pipe Creek
Coordinates39.62530, -77.14084

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length183.4 ft (55.9 m)
Max Span68.9 ft (21 m)
Deck Width36.1 ft (11 m)
Deck Area614.9 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic2,569 (2021)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200000CL0225010

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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