US Bridges

Annapolis Road over Little Fuller Creek

Fair

Sonoma County, California · 9.5 MI E/O SR 1 · Structure no. 20C0140

Built
1976
49 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
118 ft
3 main spans
Daily traffic
400
2015 count
Owner
County
County Highway Agency

About this bridge

Annapolis Road over Little Fuller Creek is a steel stringer/multi-beam or girder carrying Annapolis Road over Little Fuller Creek in Sonoma County, California. It was built in 1976, so it is 49 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 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 400 vehicles a day, roughly 4% of them trucks, projected to reach 335 by 2040. The structure is 118 ft (36 m) long and 32 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

CarriesAnnapolis Road
CrossesLittle Fuller Creek
Location9.5 MI E/O SR 1
RouteCounty Highway 0
Coordinates38.69911, -123.32753
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating97.9 US tons
Inventory rating58.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length118 ft (36 m)
Longest span58 ft (17.7 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic400 (2015)
Projected traffic335 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 Annapolis Road over Little Fuller Creek built?

It was built in 1976, making it 49 years old in 2025.

What condition is Annapolis Road over Little Fuller 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 June 2023.

How much traffic does Annapolis Road over Little Fuller Creek carry?

About 400 vehicles per day (2015 count), of which roughly 4% are trucks.

How long is Annapolis Road over Little Fuller Creek?

The structure is 118 ft (36 m) long with a longest span of 58 ft (17.7 m) and a deck 32 ft wide.

Who owns Annapolis Road over Little Fuller Creek?

It is owned by the County Highway Agency.