Structure 19105 001 11257 · Douglas County, OR

I-5 (hwy 001) NB over S Umpqua R Corp Co RD

Carries I-5 (hwy 001) NB over S Umpqua R Corp Co RD, 11.4 Mi S Of Roseburg Scl.

Overall conditionFair

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
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 FT824 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 6/9 · sets the rating

824 ft end to end, longest span 303 ft: about 2.3 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 box-beam bridge.

Built200422 years old
Length824.1 ft251.2 m
Daily traffic13,457counted 2022
Last inspectedJanuary 2025every 24 months

Location

StateOregon
CountyDouglas
Location11.4 Mi S Of Roseburg Scl
CarriesI-5 (hwy 001) NB
CrossesS Umpqua R Corp Co RD
Coordinates43.06415, -123.34826

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length824.1 ft (251.2 m)
Max Span303.5 ft (92.5 m)
Deck Width51.8 ft (15.8 m)
Deck Area3969.0 sq m
Main Spans3
Year Built2004

Traffic

Avg Daily Traffic13,457 (2022)
Truck Traffic27%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number19105 001 11257

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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