US Bridges

Bloss Avenue over High Line Canal

Fair

Merced County, California · 1.0 MI West of SR 99 · Structure no. 39C0077

Built
1940
85 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
28 ft
2 main spans
Daily traffic
1,177
2014 count
Owner
County
County Highway Agency

About this bridge

Bloss Avenue over High Line Canal is a concrete continuous slab carrying Bloss Avenue over High Line Canal in Merced County, California. It was built in 1940, so it is 85 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 1,177 vehicles a day, roughly 20% of them trucks, projected to reach 1,750 by 2042. The structure is 28 ft (8.5 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesBloss Avenue
CrossesHigh Line Canal
Location1.0 MI West of SR 99
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.40489, -120.76591
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
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 rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length28 ft (8.5 m)
Longest span13 ft (4 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,177 (2014)
Projected traffic1,750 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Bloss Avenue over High Line Canal built?

It was built in 1940, making it 85 years old in 2025.

What condition is Bloss Avenue over High Line 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 2024.

How much traffic does Bloss Avenue over High Line Canal carry?

About 1,177 vehicles per day (2014 count), of which roughly 20% are trucks.

How long is Bloss Avenue over High Line Canal?

The structure is 28 ft (8.5 m) long with a longest span of 13 ft (4 m) and a deck 25 ft wide.

Who owns Bloss Avenue over High Line Canal?

It is owned by the County Highway Agency.