Structure 39C643610700001 · Lane County, OR

Parvin Road over Lost Creek

Carries Parvin Road over Lost Creek, 10 S HWY 58 At Dexter.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT132 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

132 ft end to end. 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 truss.

Built1921rebuilt 1986
Length131.9 ft40.2 m
Daily traffic371counted 2020
Last inspectedOctober 2024every 12 months

Location

StateOregon
CountyLane
Location10 S HWY 58 At Dexter
CarriesParvin Road
CrossesLost Creek
Coordinates43.89947, -122.82297

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length131.9 ft (40.2 m)
Max Span75.1 ft (22.9 m)
Deck Width14.1 ft (4.3 m)
Deck Area172.9 sq m
Main Spans1
Year Built1921 (reconstructed 1986)

Traffic

Avg Daily Traffic371 (2020)
Truck Traffic5%
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour CriticalUnknown
Structure Number39C643610700001

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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