Structure 85 · Androscoggin County, ME

South Main Street over I-95

Carries South Main Street over I-95, 0.059 Mi S Of Witham.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT220 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 8/9Substructure 6/9 · sets the rating

220 ft end to end, longest span 61 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.

Built1956rebuilt 2007
Length220.1 ft67.1 m
Daily traffic1,835counted 2016
Last inspectedMay 2023every 24 months

Location

StateMaine
CountyAndroscoggin
Location0.059 Mi S Of Witham
CarriesSouth Main Street
CrossesI-95
Coordinates44.05276, -70.22690

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length220.1 ft (67.1 m)
Max Span61.0 ft (18.6 m)
Deck Width33.1 ft (10.1 m)
Deck Area677.7 sq m
Main Spans4
Year Built1956 (reconstructed 2007)

Traffic

Avg Daily Traffic1,835 (2016)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number0085

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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