Structure 441 · Southeast Fairbanks County, AK

Taylor Highway over Mosquito Fork

Carries Taylor Highway over Mosquito Fork, Mile Point 63.2.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT219 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 6/9 · sets the rating

219 ft end to end, longest span 108 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 tee-beam bridge.

Built197749 years old
Length219.2 ft66.8 m
Daily traffic160counted 2020
Last inspectedJuly 2023every 24 months

Location

StateAlaska
CountySoutheast Fairbanks
LocationMile Point 63.2
CarriesTaylor Highway
CrossesMosquito Fork
Coordinates64.06600, -141.99600

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length219.2 ft (66.8 m)
Max Span107.9 ft (32.9 m)
Deck Width28.9 ft (8.8 m)
Deck Area587.8 sq m
Main Spans2
Year Built1977

Traffic

Avg Daily Traffic160 (2020)
Truck Traffic28%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number0441

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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