US Bridges

Bayliss RD over Glenn-Colusa Canal

Fair

Glenn County, California · 4.82 MI East of I-5 · Structure no. 11C0010

Built
1948
77 years old, rebuilt 1975
Condition
Fair
inspected January 2025
Type
Slab
Concrete Continuous
Length
123 ft
4 main spans
Daily traffic
1,731
2007 count
Owner
County
County Highway Agency

About this bridge

Bayliss RD over Glenn-Colusa Canal is a concrete continuous slab carrying Bayliss RD over Glenn-Colusa Canal in Glenn County, California. It was built in 1948 and reconstructed in 1975, so it is 77 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,731 vehicles a day, roughly 15% of them trucks, projected to reach 2,174 by 2043. The structure is 123 ft (37.5 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesBayliss RD
CrossesGlenn-Colusa Canal
Location4.82 MI East of I-5
RouteCounty Highway 0
CountyGlenn County
StateCalifornia
Coordinates39.58215, -122.12288
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating20 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length123 ft (37.5 m)
Longest span30 ft (9.1 m)
Deck width31 ft (9.4 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,731 (2007)
Projected traffic2,174 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bayliss RD over Glenn-Colusa Canal built?

It was built in 1948, making it 77 years old in 2025. It was reconstructed in 1975.

What condition is Bayliss RD over Glenn-Colusa Canal in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Bayliss RD over Glenn-Colusa Canal carry?

About 1,731 vehicles per day (2007 count), of which roughly 15% are trucks.

How long is Bayliss RD over Glenn-Colusa Canal?

The structure is 123 ft (37.5 m) long with a longest span of 30 ft (9.1 m) and a deck 31 ft wide.

Who owns Bayliss RD over Glenn-Colusa Canal?

It is owned by the County Highway Agency.