Structure 2187 · Somerset County, ME

Bridge ST over Kennebec River

Carries Bridge ST over Kennebec River, .2 Mi Nly Of Jct RTE 2.

Overall conditionGood

Set by its lowest-rated component: Superstructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT575 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

575 ft end to end: about 1.6 football fields. 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 through arch.

Built201115 years old
Length574.8 ft175.2 m
Daily traffic5,884counted 2016
Last inspectedNovember 2024every 24 months

Location

StateMaine
CountySomerset
Location.2 Mi Nly Of Jct RTE 2
CarriesBridge ST
CrossesKennebec River
Coordinates44.71704, -69.79737

Physical Characteristics

MaterialConcrete
DesignArch - Thru
Total Length574.8 ft (175.2 m)
Max Span301.8 ft (92 m)
Deck Width48.6 ft (14.8 m)
Deck Area2593.0 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic5,884 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number2187

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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