Structure 7663A001 12892 · Douglas County, OR

I-5 (hwy 001) SB over N Umpqua Corp CR & Corp

Carries I-5 (hwy 001) SB over N Umpqua Corp CR & Corp, 03.4 Mi N Of Roseburg Ncl.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,622 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

1,622 ft end to end, longest span 142 ft: about 4.5 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 deck truss.

Built1964rebuilt 1996
Length1622.4 ft494.5 m
Daily traffic16,874counted 2022
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyDouglas
Location03.4 Mi N Of Roseburg Ncl
CarriesI-5 (hwy 001) SB
CrossesN Umpqua Corp CR & Corp
Coordinates43.28219, -123.35598

Physical Characteristics

MaterialSteel
DesignTruss - Deck
Total Length1622.4 ft (494.5 m)
Max Span142.1 ft (43.3 m)
Deck Width35.1 ft (10.7 m)
Deck Area5291.1 sq m
Main Spans5
Year Built1964 (reconstructed 1996)

Traffic

Avg Daily Traffic16,874 (2022)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge1

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number07663A001 12892

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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