Structure 3667 · Kennebec County, ME

Sebasticook Brdg R over Sebasticook River

Carries Sebasticook Brdg R over Sebasticook River, 250 E Of Jct W RTE 11.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT286 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

286 ft end to end, longest span 140 ft: about 4 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.

Built198640 years old
Length286.4 ft87.3 m
Daily traffic7,540counted 2016
Last inspectedNovember 2024every 24 months

Location

StateMaine
CountyKennebec
Location250 E Of Jct W RTE 11
CarriesSebasticook Brdg R
CrossesSebasticook River
Coordinates44.58564, -69.54974

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length286.4 ft (87.3 m)
Max Span140.1 ft (42.7 m)
Deck Width42.3 ft (12.9 m)
Deck Area1126.2 sq m
Main Spans2
Year Built1986

Traffic

Avg Daily Traffic7,540 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number3667

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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