Structure 7424 009 06294 · Tillamook County, OR

Us101 (hwy 9) over Kilchis R. & Possetti RD

Carries Us101 (hwy 9) over Kilchis R. & Possetti RD, 026 Mi N Tillamook.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT276 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 4/9 · sets the rating

276 ft end to end, longest span 62 ft: about 4 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.

Built195274 years old
Length275.9 ft84.1 m
Daily traffic13,357counted 2022
Last inspectedMarch 2023every 24 months

Location

StateOregon
CountyTillamook
Location026 Mi N Tillamook
CarriesUs101 (hwy 9)
CrossesKilchis R. & Possetti RD
Coordinates45.49588, -123.85039

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length275.9 ft (84.1 m)
Max Span62.0 ft (18.9 m)
Deck Width34.8 ft (10.6 m)
Deck Area891.5 sq m
Main Spans3
Year Built1952

Traffic

Avg Daily Traffic13,357 (2022)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number07424 009 06294

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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