US Bridges

State Route 33 over Outside Canal

Fair

Merced County, California · 10-MER-033-18.41 · Structure no. 39 0048

Built
1936
89 years old
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
38 ft
1 main span
Daily traffic
7,475
2009 count
Owner
State
State Highway Agency

About this bridge

State Route 33 over Outside Canal is a concrete culvert carrying State Route 33 over Outside Canal in Merced County, California. It was built in 1936, so it is 89 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 11,591 by 2045. The structure is 38 ft (11.7 m) long and 44 ft wide. If it were closed, the detour would be 4.3 mi (7 km).

CarriesState Route 33
CrossesOutside Canal
Location10-MER-033-18.41
RouteState Highway 33
Coordinates37.12923, -121.01495
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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.6 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length38 ft (11.7 m)
Longest span38 ft (11.7 m)
Deck width44 ft (13.4 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,475 (2009)
Projected traffic11,591 by 2045
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed4.3 mi (7 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was State Route 33 over Outside Canal built?

It was built in 1936, making it 89 years old in 2025.

What condition is State Route 33 over Outside Canal 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 January 2025.

How much traffic does State Route 33 over Outside Canal carry?

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

How long is State Route 33 over Outside Canal?

The structure is 38 ft (11.7 m) long with a longest span of 38 ft (11.7 m) and a deck 44 ft wide.

Who owns State Route 33 over Outside Canal?

It is owned by the State Highway Agency.