Structure 61105000001089 · Coos County, OR

Experimental Road over Rock Creek

Carries Experimental Road over Rock Creek, 13 Mi South Of 97466.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT73 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

73 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.

Built199432 years old
Length73.2 ft22.3 m
Daily traffic20counted 2006
Last inspectedJune 2021every 48 months

Location

StateOregon
CountyCoos
Location13 Mi South Of 97466
CarriesExperimental Road
CrossesRock Creek
Coordinates42.70514, -124.05978

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length73.2 ft (22.3 m)
Max Span70.9 ft (21.6 m)
Deck Width16.1 ft (4.9 m)
Deck Area109.3 sq m
Main Spans1
Year Built1994

Traffic

Avg Daily Traffic20 (2006)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJune 2021
Inspection FrequencyEvery 48 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical7 — Countermeasures installed
Structure Number061105000001089

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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