Structure 21087 001 12169 · Douglas County, OR

I-5 (hwy 001) over I-5 @ Mclain RD

Carries I-5 (hwy 001) over I-5 @ Mclain RD, 02.3 Mi S Of Roseburg Scl.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

110 ft end to end, longest span 42 ft. Lengths and the car 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 slab bridge.

Built200917 years old
Length109.9 ft33.5 m
Daily traffic41,701counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateOregon
CountyDouglas
Location02.3 Mi S Of Roseburg Scl
CarriesI-5 (hwy 001)
CrossesI-5 @ Mclain RD
Coordinates43.18332, -123.37410

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length109.9 ft (33.5 m)
Max Span42.0 ft (12.8 m)
Deck Width112.2 ft (34.2 m)
Deck Area1145.7 sq m
Main Spans3
Year Built2009

Traffic

Avg Daily Traffic41,701 (2022)
Truck Traffic20%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number21087 001 12169

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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