Structure 626 006F25631 · Union County, OR

I-84 (hwy 6) Fr RD over Grande Ronde R And Uprr

Carries I-84 (hwy 6) Fr RD over Grande Ronde R And Uprr, 0.1 Mi N Upper Perry Int.

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
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT312 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

312 ft end to end: 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 deck arch.

Built1924rebuilt 2009
Length312.0 ft95.1 m
Daily traffic9counted 2022
Last inspectedMay 2024every 24 months

Location

StateOregon
CountyUnion
Location0.1 Mi N Upper Perry Int
CarriesI-84 (hwy 6) Fr RD
CrossesGrande Ronde R And Uprr
Coordinates45.35263, -118.17057

Physical Characteristics

MaterialConcrete Continuous
DesignArch - Deck
Total Length312.0 ft (95.1 m)
Max Span134.8 ft (41.1 m)
Deck Width22.6 ft (6.9 m)
Deck Area656.2 sq m
Main Spans1
Year Built1924 (reconstructed 2009)

Traffic

Avg Daily Traffic9 (2022)
Truck Traffic44%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number00626 006F25631

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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