Structure 1006 · Fairbanks North Star County, AK

Cache Creek Road over Spencer Creek

Carries Cache Creek Road over Spencer Creek, Mile Point 19.3.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

41 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.

Built199630 years old
Length40.7 ft12.4 m
Daily traffic30counted 2018
Last inspectedAugust 2024every 24 months

Location

StateAlaska
CountyFairbanks North Star
LocationMile Point 19.3
CarriesCache Creek Road
CrossesSpencer Creek
Coordinates64.82821, -148.49103

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length40.7 ft (12.4 m)
Max Span38.7 ft (11.8 m)
Deck Width16.1 ft (4.9 m)
Deck Area60.8 sq m
Main Spans1
Year Built1996

Traffic

Avg Daily Traffic30 (2018)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number1006

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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