Structure 5823 · Penobscot County, ME

Hogan RD over Interstate 95 NB & SB

Carries Hogan RD over Interstate 95 NB & SB, Interchange 187.

Overall conditionPoor

Set by its lowest-rated component: Deck and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT454 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 4/9 · sets the rating

454 ft end to end, longest span 80 ft: about 6 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.

Built1960rebuilt 1983
Length453.7 ft138.3 m
Daily traffic8,606counted 2016
Last inspectedAugust 2023every 24 months

Location

StateMaine
CountyPenobscot
LocationInterchange 187
CarriesHogan RD
CrossesInterstate 95 NB & SB
Coordinates44.83226, -68.74171

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length453.7 ft (138.3 m)
Max Span80.1 ft (24.4 m)
Deck Width72.2 ft (22 m)
Deck Area3042.6 sq m
Main Spans6
Year Built1960 (reconstructed 1983)

Traffic

Avg Daily Traffic8,606 (2016)
Truck Traffic5%
Lanes On Bridge6
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number5823

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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