US Bridges

Airport Road over Watson Hollow

Good

Solano County, California · 0.2 MI Se/O Liberty Is RD · Structure no. 23C0253

Built
2008
17 years old
Condition
Good
inspected March 2021
Type
Slab
Prestressed Concrete
Length
73 ft
1 main span
Daily traffic
950
2000 count
Owner
City
City or Municipal Highway Agency

About this bridge

Airport Road over Watson Hollow is a prestressed concrete slab carrying Airport Road over Watson Hollow in Solano County, California. It was built in 2008, so it is 17 years old, younger 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 950 vehicles a day, roughly 4% of them trucks, projected to reach 2,667 by 2038. The structure is 73 ft (22.1 m) long and 77 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesAirport Road
CrossesWatson Hollow
Location0.2 MI Se/O Liberty Is RD
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.19421, -121.71306
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 protection9 ExcellentNo problems noted.
Last inspectionMarch 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length73 ft (22.1 m)
Longest span68 ft (20.6 m)
Deck width77 ft (23.5 m)
Roadway width56 ft (17.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic950 (2000)
Projected traffic2,667 by 2038
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Airport Road over Watson Hollow built?

It was built in 2008, making it 17 years old in 2025.

What condition is Airport Road over Watson Hollow 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 March 2021.

How much traffic does Airport Road over Watson Hollow carry?

About 950 vehicles per day (2000 count), of which roughly 4% are trucks.

How long is Airport Road over Watson Hollow?

The structure is 73 ft (22.1 m) long with a longest span of 68 ft (20.6 m) and a deck 77 ft wide.

Who owns Airport Road over Watson Hollow?

It is owned by the City or Municipal Highway Agency.