Structure 5907 · Penobscot County, ME

Chester RD over Medunkeunk Stream

Carries Chester RD over Medunkeunk Stream, 3.2 Mi NE Of Townline.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

37 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.

Built196264 years old
Length37.4 ft11.4 m
Daily traffic2,450counted 2016
Last inspectedMarch 2024every 24 months

Location

StateMaine
CountyPenobscot
Location3.2 Mi NE Of Townline
CarriesChester RD
CrossesMedunkeunk Stream
Coordinates45.39330, -68.51849

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length37.4 ft (11.4 m)
Max Span35.1 ft (10.7 m)
Deck Width28.9 ft (8.8 m)
Deck Area100.3 sq m
Main Spans1
Year Built1962

Traffic

Avg Daily Traffic2,450 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number5907

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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