Structure 11C0266 · Glenn County, CA

Road Z over Campbell Slough

Carries Road Z over Campbell Slough, 1.5 Mi N/o SR 162.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT150 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

150 ft end to end, longest span 30 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 slab bridge.

Built201115 years old
Length149.9 ft45.7 m
Daily traffic586counted 2011
Last inspectedFebruary 2022every 48 months

Location

StateCalifornia
CountyGlenn
Location1.5 Mi N/o SR 162
CarriesRoad Z
CrossesCampbell Slough
Coordinates39.48571, -121.92980

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length149.9 ft (45.7 m)
Max Span29.9 ft (9.1 m)
Deck Width30.5 ft (9.3 m)
Deck Area425.0 sq m
Main Spans4
Year Built2011

Traffic

Avg Daily Traffic586 (2011)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2022
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number11C0266

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.

Nearby Bridges