US Bridges

Suisun Valley RD over Suisun Creek

Fair

Solano County, California · 0.35 MI S Morrison Lane · Structure no. 23C0076L

Built
1909
116 years old
Condition
Fair
inspected November 2023
Type
Arch - Deck
Concrete
Length
86 ft
1 main span
Daily traffic
1,052
2009 count
Owner
County
County Highway Agency

About this bridge

Suisun Valley RD over Suisun Creek is a concrete arch - deck carrying Suisun Valley RD over Suisun Creek in Solano County, California. It was built in 1909, so it is 116 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 1,052 vehicles a day, roughly 3% of them trucks, projected to reach 3,272 by 2043. The structure is 86 ft (26.2 m) long and 19 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSuisun Valley RD
CrossesSuisun Creek
Location0.35 MI S Morrison Lane
RouteCounty Highway 0
CountySolano County
StateCalifornia
Coordinates38.26095, -122.11541
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
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.3 US tons
Inventory rating18.2 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length86 ft (26.2 m)
Longest span84 ft (25.6 m)
Deck width19 ft (5.9 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,052 (2009)
Projected traffic3,272 by 2043
Trucks3%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

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

Frequently asked questions

When was Suisun Valley RD over Suisun Creek built?

It was built in 1909, making it 116 years old in 2025.

What condition is Suisun Valley RD over Suisun 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 November 2023.

How much traffic does Suisun Valley RD over Suisun Creek carry?

About 1,052 vehicles per day (2009 count), of which roughly 3% are trucks.

How long is Suisun Valley RD over Suisun Creek?

The structure is 86 ft (26.2 m) long with a longest span of 84 ft (25.6 m) and a deck 19 ft wide.

Who owns Suisun Valley RD over Suisun Creek?

It is owned by the County Highway Agency.