US Bridges

Udell Road over Putah South Canal

Good

Solano County, California · 0.1 MI E Paddon RD · Structure no. 23C0171

Built
1956
69 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete
Length
60 ft
2 main spans
Daily traffic
423
2012 count
Owner
County
County Highway Agency

About this bridge

Udell Road over Putah South Canal is a concrete slab carrying Udell Road over Putah South Canal in Solano County, California. It was built in 1956, so it is 69 years old, older than the California average of 54.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 423 vehicles a day, roughly 2% of them trucks, projected to reach 601 by 2044. The structure is 60 ft (18.3 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUdell Road
CrossesPutah South Canal
Location0.1 MI E Paddon RD
RouteCounty Highway 0
Coordinates38.43491, -121.95257
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
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 rating55.7 US tons
Inventory rating33.2 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span29 ft (8.8 m)
Deck width28 ft (8.6 m)
Roadway width27 ft (8.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic423 (2012)
Projected traffic601 by 2044
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Udell Road over Putah South Canal built?

It was built in 1956, making it 69 years old in 2025.

What condition is Udell Road over Putah South Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does Udell Road over Putah South Canal carry?

About 423 vehicles per day (2012 count), of which roughly 2% are trucks.

How long is Udell Road over Putah South Canal?

The structure is 60 ft (18.3 m) long with a longest span of 29 ft (8.8 m) and a deck 28 ft wide.

Who owns Udell Road over Putah South Canal?

It is owned by the County Highway Agency.