US Bridges

Monterey Road over Llagas Creek

Fair

Santa Clara County, California · 0.25 MI N Calif Ave · Structure no. 37C0215

Built
1938
87 years old, rebuilt 2000
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
169 ft
9 main spans
Daily traffic
11,440
2014 count
Owner
County
County Highway Agency

About this bridge

Monterey Road over Llagas Creek is a concrete continuous slab carrying Monterey Road over Llagas Creek in Santa Clara County, California. It was built in 1938 and reconstructed in 2000, so it is 87 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 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 11,440 vehicles a day, roughly 5% of them trucks, projected to reach 9,367 by 2042. The structure is 169 ft (51.5 m) long and 68 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMonterey Road
CrossesLlagas Creek
Location0.25 MI N Calif Ave
RouteCounty Highway 0
CountySanta Clara County
StateCalifornia
Coordinates37.09546, -121.61641
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.5 US tons
Inventory rating25.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans9
Design loadH 15
Structure length169 ft (51.5 m)
Longest span22 ft (6.7 m)
Deck width68 ft (20.6 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,440 (2014)
Projected traffic9,367 by 2042
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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 Monterey Road over Llagas Creek built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 2000.

What condition is Monterey Road over Llagas 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 2024.

How much traffic does Monterey Road over Llagas Creek carry?

About 11,440 vehicles per day (2014 count), of which roughly 5% are trucks.

How long is Monterey Road over Llagas Creek?

The structure is 169 ft (51.5 m) long with a longest span of 22 ft (6.7 m) and a deck 68 ft wide.

Who owns Monterey Road over Llagas Creek?

It is owned by the County Highway Agency.