US Bridges

Monte Vista Terr over Hillside

Fair

Sonoma County, California · In Monte Rio · Structure no. 20C0401

Built
2001
24 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
35 ft
2 main spans
Daily traffic
200
2011 count
Owner
County
County Highway Agency

About this bridge

Monte Vista Terr over Hillside is a steel stringer/multi-beam or girder carrying Monte Vista Terr over Hillside in Sonoma County, California. It was built in 2001, so it is 24 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 200 vehicles a day, roughly 1% of them trucks, projected to reach 273 by 2042. The structure is 35 ft (10.8 m) long and 8 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesMonte Vista Terr
CrossesHillside
LocationIn Monte Rio
RouteCounty Highway 0
CountySonoma County
StateCalifornia
Coordinates38.46761, -123.01685
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment6: Equal to present minimum criteria
Operating rating52.5 US tons
Inventory rating31.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans2
Design loadUnknown
Structure length35 ft (10.8 m)
Longest span18 ft (5.5 m)
Deck width8 ft (2.4 m)
Roadway width12 ft (3.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2011)
Projected traffic273 by 2042
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesOther
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Monte Vista Terr over Hillside built?

It was built in 2001, making it 24 years old in 2025.

What condition is Monte Vista Terr over Hillside 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 March 2024.

How much traffic does Monte Vista Terr over Hillside carry?

About 200 vehicles per day (2011 count), of which roughly 1% are trucks.

How long is Monte Vista Terr over Hillside?

The structure is 35 ft (10.8 m) long with a longest span of 18 ft (5.5 m) and a deck 8 ft wide.

Who owns Monte Vista Terr over Hillside?

It is owned by the County Highway Agency.