Structure 3702 · Aroostook County, ME

Frenchville RD over Alder Brook

Carries Frenchville RD over Alder Brook, 4.1 Mi NE Of Jct RTE 11.

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 overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

30 ft end to end. 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 slab bridge.

Built195868 years old
Length29.5 ft9 m
Daily traffic630counted 2016
Last inspectedNovember 2024every 12 months

Location

StateMaine
CountyAroostook
Location4.1 Mi NE Of Jct RTE 11
CarriesFrenchville RD
CrossesAlder Brook
Coordinates46.67024, -68.35120

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length29.5 ft (9 m)
Max Span24.9 ft (7.6 m)
Deck Width29.5 ft (9 m)
Deck Area81 sq m
Main Spans1
Year Built1958

Traffic

Avg Daily Traffic630 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical3 — Scour critical
Structure Number3702

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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