US Bridges

Byrnes Road over Gibson Canyon Creek

Fair

Solano County, California · 0.15 MI S Weber RD · Structure no. 23C0125

Built
1997
28 years old
Condition
Fair
inspected October 2024
Type
Slab
Concrete Continuous
Length
49 ft
2 main spans
Daily traffic
655
2011 count
Owner
County
County Highway Agency

About this bridge

Byrnes Road over Gibson Canyon Creek is a concrete continuous slab carrying Byrnes Road over Gibson Canyon Creek in Solano County, California. It was built in 1997, so it is 28 years old, younger 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 6 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 655 vehicles a day, roughly 2% of them trucks, projected to reach 886 by 2046. The structure is 49 ft (15 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesByrnes Road
CrossesGibson Canyon Creek
Location0.15 MI S Weber RD
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.39959, -121.90588
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length49 ft (15 m)
Longest span22 ft (6.7 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic655 (2011)
Projected traffic886 by 2046
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Byrnes Road over Gibson Canyon Creek built?

It was built in 1997, making it 28 years old in 2025.

What condition is Byrnes Road over Gibson Canyon Creek 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 October 2024.

How much traffic does Byrnes Road over Gibson Canyon Creek carry?

About 655 vehicles per day (2011 count), of which roughly 2% are trucks.

How long is Byrnes Road over Gibson Canyon Creek?

The structure is 49 ft (15 m) long with a longest span of 22 ft (6.7 m) and a deck 31 ft wide.

Who owns Byrnes Road over Gibson Canyon Creek?

It is owned by the County Highway Agency.