Structure 60303000000023 · Skamania County, WA

No Data Entered over Lost Creek Ditch

Carries No Data Entered over Lost Creek Ditch, 7 Miles SW Of Mt. Adams R.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructuresets the rating3/9 · Serious
Substructure4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 3/9 · sets the ratingSubstructure 4/9

37 ft end to end. 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 multi-beam bridge.

Built198343 years old
Length36.7 ft11.2 m
Daily traffic50counted 1992
Last inspectedAugust 2024every 12 months

Location

StateWashington
CountySkamania
Location7 Miles SW Of Mt. Adams R
CarriesNo Data Entered
CrossesLost Creek Ditch
Coordinates45.96885, -122.03606

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length36.7 ft (11.2 m)
Max Span33.5 ft (10.2 m)
Deck Width16.1 ft (4.9 m)
Deck Area54.9 sq m
Main Spans1
Year Built1983

Traffic

Avg Daily Traffic50 (1992)
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number060303000000023

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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