Structure 1523 · Somerset County, ME

Bridge ST over W Channel Kennebec River

Carries Bridge ST over W Channel Kennebec River, 150 Ft E Of Jct US 201.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT156 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

156 ft end to end, longest span 74 ft: about 2 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.

Built200323 years old
Length155.8 ft47.5 m
Daily traffic13,343counted 2016
Last inspectedSeptember 2023every 24 months

Location

StateMaine
CountySomerset
Location150 Ft E Of Jct US 201
CarriesBridge ST
CrossesW Channel Kennebec River
Coordinates44.58771, -69.59368

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length155.8 ft (47.5 m)
Max Span74.5 ft (22.7 m)
Deck Width54.5 ft (16.6 m)
Deck Area788.5 sq m
Main Spans2
Year Built2003

Traffic

Avg Daily Traffic13,343 (2016)
Truck Traffic5%
Lanes On Bridge3

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1523

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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