Structure 8951 039Y04635 · Yamhill County, OR

HWY 483 Conn. over HWY 39

Carries HWY 483 Conn. over HWY 39, At Mcminnville Spur.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT254 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

254 ft end to end, longest span 72 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 box-beam bridge.

Built196462 years old
Length253.9 ft77.4 m
Daily traffic7,162counted 2022
Last inspectedNovember 2024every 24 months

Location

StateOregon
CountyYamhill
LocationAt Mcminnville Spur
CarriesHWY 483 Conn.
CrossesHWY 39
Coordinates45.20073, -123.17799

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length253.9 ft (77.4 m)
Max Span71.9 ft (21.9 m)
Deck Width26.6 ft (8.1 m)
Deck Area626.9 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic7,162 (2022)
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number08951 039Y04635

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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