Structure 2147 · Fairbanks North Star County, AK

Richardson Highway over Dawson Road Uc

Carries Richardson Highway over Dawson Road Uc, Mile Point 348.8.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT131 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

131 ft end to end. 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.

Built200818 years old
Length130.9 ft39.9 m
Daily traffic8,690counted 2020
Last inspectedJuly 2024every 24 months

Location

StateAlaska
CountyFairbanks North Star
LocationMile Point 348.8
CarriesRichardson Highway
CrossesDawson Road Uc
Coordinates64.74305, -147.30949

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length130.9 ft (39.9 m)
Max Span128.3 ft (39.1 m)
Deck Width81.4 ft (24.8 m)
Deck Area989.5 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic8,690 (2020)
Truck Traffic7%
Lanes On Bridge4
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2147

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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