Structure 16874 033 05596 · Benton County, OR

Or 34 (hwy 33) over 3rd & 4th Streets

Carries Or 34 (hwy 33) over 3rd & 4th Streets, In Corvallis.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,258 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

1,258 ft end to end, longest span 141 ft: about 3.5 football fields. 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 multi-beam bridge.

Built199234 years old
Length1257.5 ft383.3 m
Daily traffic22,606counted 2022
Last inspectedMay 2023every 24 months

Location

StateOregon
CountyBenton
LocationIn Corvallis
CarriesOr 34 (hwy 33)
Crosses3rd & 4th Streets
Coordinates44.55712, -123.26453

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1257.5 ft (383.3 m)
Max Span141.1 ft (43 m)
Deck Width42.7 ft (13 m)
Deck Area4982.9 sq m
Main Spans10
Year Built1992

Traffic

Avg Daily Traffic22,606 (2022)
Truck Traffic6%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number16874 033 05596

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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