Structure 1709013P0000000 · Penobscot County, ME

Barnard Mountain R over Katahdin Brook

Carries Barnard Mountain R over Katahdin Brook, 2.6 M North Katahdin Loop.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

51 ft end to end. Lengths and the car 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.

Built200026 years old
Length50.9 ft15.5 m
Daily traffic5counted 2024
Last inspectedMay 2024every 24 months

Location

StateMaine
CountyPenobscot
Location2.6 M North Katahdin Loop
CarriesBarnard Mountain R
CrossesKatahdin Brook
Coordinates45.91960, -68.76235

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length50.9 ft (15.5 m)
Max Span37.4 ft (11.4 m)
Deck Width13.1 ft (4 m)
Deck Area62 sq m
Main Spans1
Year Built2000

Traffic

Avg Daily Traffic5 (2024)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number1709013P0000000

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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