Structure 2492 073 04967 · Douglas County, OR

Or 138 (hwy 138) over N Umpqua R (marsters Br)

Carries Or 138 (hwy 138) over N Umpqua R (marsters Br), 49.7 Mi E Of HWY 99.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT288 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 5/9 · sets the rating

288 ft end to end, longest span 90 ft: about 4 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 tee-beam bridge.

Built195967 years old
Length288.1 ft87.8 m
Daily traffic583counted 2022
Last inspectedJuly 2024every 24 months

Location

StateOregon
CountyDouglas
Location49.7 Mi E Of HWY 99
CarriesOr 138 (hwy 138)
CrossesN Umpqua R (marsters Br)
Coordinates43.29085, -122.56534

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length288.1 ft (87.8 m)
Max Span89.9 ft (27.4 m)
Deck Width33.1 ft (10.1 m)
Deck Area886.8 sq m
Main Spans5
Year Built1959

Traffic

Avg Daily Traffic583 (2022)
Truck Traffic20%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number02492 073 04967

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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