Structure 2000A 068200013 · Linn County, OR

Old Bridge DR over Overflow

Carries Old Bridge DR over Overflow, 0013mi NE Of HWY 226.

Overall conditionPoor

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating3/9 · Serious
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT147 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 3/9 · sets the rating

147 ft end to end, longest span 20 ft: about 2 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 multi-beam bridge.

Built193492 years old
Length147.0 ft44.8 m
Daily traffic76counted 2021
Last inspectedJuly 2024every 12 months

Location

StateOregon
CountyLinn
Location0013mi NE Of HWY 226
CarriesOld Bridge DR
CrossesOverflow
Coordinates44.63180, -122.92964

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length147.0 ft (44.8 m)
Max Span20.0 ft (6.1 m)
Deck Width26.9 ft (8.2 m)
Deck Area367.4 sq m
Main Spans7
Year Built1934

Traffic

Avg Daily Traffic76 (2021)
Truck Traffic24%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number2000A 068200013

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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