Structure 8306 009 00491 · Clatsop County, OR

Us101 (hwy 9) over Youngs Bay

Carries Us101 (hwy 9) over Youngs Bay, At Smith Point.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
4,208 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

4,208 ft end to end, longest span 153 ft: about 12 football fields. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 lift bridge (drawn closed).

Built196462 years old
Length4208.3 ft1282.7 m
Daily traffic20,338counted 2022
Last inspectedMay 2024every 24 months

Location

StateOregon
CountyClatsop
LocationAt Smith Point
CarriesUs101 (hwy 9)
CrossesYoungs Bay
Coordinates46.17618, -123.86847

Physical Characteristics

MaterialSteel
DesignMovable - Lift
Total Length4208.3 ft (1282.7 m)
Max Span152.6 ft (46.5 m)
Deck Width34.8 ft (10.6 m)
Deck Area13596.6 sq m
Main Spans2
Year Built1964

Traffic

Avg Daily Traffic20,338 (2022)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number08306 009 00491

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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