US Bridges

State Route 33 over Garzas Creek Bypass

Fair

Merced County, California · 10-MER-033-24.54 · Structure no. 39 0047

Built
1920
105 years old, rebuilt 1973
Condition
Fair
inspected December 2023
Type
Slab
Concrete Continuous
Length
52 ft
3 main spans
Daily traffic
7,475
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 33 over Garzas Creek Bypass is a concrete continuous slab carrying State Route 33 over Garzas Creek Bypass in Merced County, California. It was built in 1920 and reconstructed in 1973, so it is 105 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 7,475 vehicles a day, roughly 23% of them trucks, projected to reach 11,785 by 2045. The structure is 52 ft (16 m) long and 41 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesState Route 33
CrossesGarzas Creek Bypass
Location10-MER-033-24.54
RouteState Highway 33
Coordinates37.21783, -121.01244
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating109.2 US tons
Inventory rating65.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length52 ft (16 m)
Longest span17 ft (5.1 m)
Deck width41 ft (12.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,475 (2009)
Projected traffic11,785 by 2045
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 State Route 33 over Garzas Creek Bypass built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1973.

What condition is State Route 33 over Garzas Creek Bypass 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 December 2023.

How much traffic does State Route 33 over Garzas Creek Bypass carry?

About 7,475 vehicles per day (2009 count), of which roughly 23% are trucks.

How long is State Route 33 over Garzas Creek Bypass?

The structure is 52 ft (16 m) long with a longest span of 17 ft (5.1 m) and a deck 41 ft wide.

Who owns State Route 33 over Garzas Creek Bypass?

It is owned by the State Highway Agency.