US Bridges

Cienega Road over Bird Creek

Good

San Benito County, California · At Hospital Road · Structure no. 43C0074

Built
2015
10 years old
Condition
Good
inspected November 2024
Type
Arch - Deck
Concrete
Length
26 ft
1 main span
Daily traffic
500
2015 count
Owner
County
County Highway Agency

About this bridge

Cienega Road over Bird Creek is a concrete arch - deck carrying Cienega Road over Bird Creek in San Benito County, California. It was built in 2015, so it is 10 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 786 by 2046. The structure is 26 ft (8 m) long. If it were closed, the detour would be 0.6 mi (1 km).

CarriesCienega Road
CrossesBird Creek
LocationAt Hospital Road
RouteCounty Highway 0
Coordinates36.81346, -121.39518
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length26 ft (8 m)
Longest span25 ft (7.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic500 (2015)
Projected traffic786 by 2046
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Cienega Road over Bird Creek built?

It was built in 2015, making it 10 years old in 2025.

What condition is Cienega Road over Bird 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 November 2024.

How much traffic does Cienega Road over Bird Creek carry?

About 500 vehicles per day (2015 count), of which roughly 5% are trucks.

How long is Cienega Road over Bird Creek?

The structure is 26 ft (8 m) long with a longest span of 25 ft (7.7 m).

Who owns Cienega Road over Bird Creek?

It is owned by the County Highway Agency.