US Bridges

Allison DR over Ulatis Creek

Good

Solano County, California · 1000 N Elmira RD · Structure no. 23C0225

Built
1992
33 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
15,110
2011 count
Owner
City
City or Municipal Highway Agency

About this bridge

Allison DR over Ulatis Creek is a prestressed concrete box beam or girders - multiple carrying Allison DR over Ulatis Creek in Solano County, California. It was built in 1992, so it is 33 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 15,110 vehicles a day, roughly 5% of them trucks, projected to reach 20,801 by 2042. The structure is 103 ft (31.4 m) long and 126 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAllison DR
CrossesUlatis Creek
Location1000 N Elmira RD
RouteCity Street 0
Coordinates38.35495, -121.96434
Functional classUrban 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 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length103 ft (31.4 m)
Longest span100 ft (30.5 m)
Deck width126 ft (38.4 m)
Roadway width88 ft (26.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,110 (2011)
Projected traffic20,801 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 Allison DR over Ulatis Creek built?

It was built in 1992, making it 33 years old in 2025.

What condition is Allison DR over Ulatis Creek 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 Allison DR over Ulatis Creek carry?

About 15,110 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Allison DR over Ulatis Creek?

The structure is 103 ft (31.4 m) long with a longest span of 100 ft (30.5 m) and a deck 126 ft wide.

Who owns Allison DR over Ulatis Creek?

It is owned by the City or Municipal Highway Agency.