Structure 2404 · Somerset County, ME

Main ST over Sebasticook River

Carries Main ST over Sebasticook River, 0.3 Mi NE Jct Route 152.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT202 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

202 ft end to end, longest span 100 ft: about 3 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.

Built199729 years old
Length202.1 ft61.6 m
Daily traffic4,541counted 2016
Last inspectedDecember 2024every 24 months

Location

StateMaine
CountySomerset
Location0.3 Mi NE Jct Route 152
CarriesMain ST
CrossesSebasticook River
Coordinates44.83346, -69.40672

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length202.1 ft (61.6 m)
Max Span100.1 ft (30.5 m)
Deck Width42.7 ft (13 m)
Deck Area800.8 sq m
Main Spans2
Year Built1997

Traffic

Avg Daily Traffic4,541 (2016)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number2404

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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