US Bridges

State Route 33 over Orestimba Creek

Good

Stanislaus County, California · 10-STA-033-5.57 · Structure no. 38 0021

Built
1954
71 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
135 ft
6 main spans
Daily traffic
4,850
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 33 over Orestimba Creek is a concrete continuous slab carrying State Route 33 over Orestimba Creek in Stanislaus County, California. It was built in 1954, so it is 71 years old, older 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 4,850 vehicles a day, roughly 11% of them trucks, projected to reach 10,372 by 2041. The structure is 135 ft (41 m) long and 34 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesState Route 33
CrossesOrestimba Creek
Location10-STA-033-5.57
RouteState Highway 33
CountyStanislaus County
StateCalifornia
Coordinates37.37704, -121.05807
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length135 ft (41 m)
Longest span24 ft (7.3 m)
Deck width34 ft (10.4 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,850 (2009)
Projected traffic10,372 by 2041
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Orestimba Creek built?

It was built in 1954, making it 71 years old in 2025.

What condition is State Route 33 over Orestimba 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 April 2023.

How much traffic does State Route 33 over Orestimba Creek carry?

About 4,850 vehicles per day (2009 count), of which roughly 11% are trucks.

How long is State Route 33 over Orestimba Creek?

The structure is 135 ft (41 m) long with a longest span of 24 ft (7.3 m) and a deck 34 ft wide.

Who owns State Route 33 over Orestimba Creek?

It is owned by the State Highway Agency.