Structure 61201000001099 · Tillamook County, OR

Road over Three Rivers

Carries Road over Three Rivers, .01 Mi From Jct Or HWY 22.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

100 ft end to end, longest span 60 ft. 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 rigid-frame bridge.

Built195373 years old
Length100.1 ft30.5 m
Daily traffic10counted 1996
Last inspectedJune 2024every 24 months

Location

StateOregon
CountyTillamook
Location.01 Mi From Jct Or HWY 22
CarriesRoad
CrossesThree Rivers
Coordinates45.21333, -123.84917

Physical Characteristics

MaterialConcrete Continuous
DesignFrame
Total Length100.1 ft (30.5 m)
Max Span60.0 ft (18.3 m)
Deck Width16.4 ft (5 m)
Deck Area152.5 sq m
Main Spans3
Year Built1953

Traffic

Avg Daily Traffic10 (1996)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number061201000001099

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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