Structure 12C0002 · Butte County, CA

Canyon Highland DR over Oroville Dam BLVD

Carries Canyon Highland DR over Oroville Dam BLVD, 9.25 Mi E From SH 99.

Overall conditionFair

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

How ratings work
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 7/9Substructure 5/9 · sets the rating

46 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 deck arch.

Built193096 years old
Length45.9 ft14 m
Daily traffic500counted 2019
Last inspectedMarch 2025every 24 months

Location

StateCalifornia
CountyButte
Location9.25 Mi E From SH 99
CarriesCanyon Highland DR
CrossesOroville Dam BLVD
Coordinates39.51722, -121.52701

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length45.9 ft (14 m)
Max Span43.0 ft (13.1 m)
Deck Width28.2 ft (8.6 m)
Deck Area120.4 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic500 (2019)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMarch 2025
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number12C0002

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