Structure 1180 009 17502 · Lane County, OR

Us101 (hwy 9) over Big Creek

Carries Us101 (hwy 9) over Big Creek, 07.4 Mi S Linc-lane Co LN.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT239 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

239 ft end to end: about 3 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 through arch.

Built1931rebuilt 1997
Length239.2 ft72.9 m
Daily traffic3,003counted 2022
Last inspectedJuly 2023every 24 months

Location

StateOregon
CountyLane
Location07.4 Mi S Linc-lane Co LN
CarriesUs101 (hwy 9)
CrossesBig Creek
Coordinates44.17433, -124.11531

Physical Characteristics

MaterialConcrete
DesignArch - Thru
Total Length239.2 ft (72.9 m)
Max Span120.1 ft (36.6 m)
Deck Width39.4 ft (12 m)
Deck Area874.8 sq m
Main Spans1
Year Built1931 (reconstructed 1997)

Traffic

Avg Daily Traffic3,003 (2022)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical3 — Scour critical
Structure Number01180 009 17502

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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