Structure B1118 · Humboldt County, NV

SR 293 over Quinn Rvr

Carries SR 293 over Quinn Rvr, West Of Orovada.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT68 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 68 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built196462 years old
Length67.9 ft20.7 m
Daily traffic250counted 2017
Last inspectedJuly 2021every 48 months

Location

StateNevada
CountyHumboldt
LocationWest Of Orovada
CarriesSR 293
CrossesQuinn Rvr
Coordinates41.58254, -117.90973

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length67.9 ft (20.7 m)
Max Span15.1 ft (4.6 m)
Deck Area163.5 sq m
Main Spans3
Year Built1964

Traffic

Avg Daily Traffic250 (2017)
Truck Traffic13%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberB1118

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.