US Bridges

Monson Ave over Alta East Branch Canal

Fair

Fresno County, California · 1.4 MI S of Manning Ave · Structure no. 42C0406

Built
1975
50 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
63 ft
3 main spans
Daily traffic
625
2010 count
Owner
County
County Highway Agency

About this bridge

Monson Ave over Alta East Branch Canal is a concrete continuous slab carrying Monson Ave over Alta East Branch Canal in Fresno County, California. It was built in 1975, so it is 50 years old, younger 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 625 vehicles a day, roughly 10% of them trucks, projected to reach 850 by 2043. The structure is 63 ft (19.2 m) long and 29 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesMonson Ave
CrossesAlta East Branch Canal
Location1.4 MI S of Manning Ave
RouteCounty Highway 0
CountyFresno County
StateCalifornia
Coordinates36.58374, -119.33185
Functional classRural Local

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 protection7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating59.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length63 ft (19.2 m)
Longest span20 ft (6.1 m)
Deck width29 ft (8.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2010)
Projected traffic850 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Monson Ave over Alta East Branch Canal built?

It was built in 1975, making it 50 years old in 2025.

What condition is Monson Ave over Alta East Branch 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 December 2024.

How much traffic does Monson Ave over Alta East Branch Canal carry?

About 625 vehicles per day (2010 count), of which roughly 10% are trucks.

How long is Monson Ave over Alta East Branch Canal?

The structure is 63 ft (19.2 m) long with a longest span of 20 ft (6.1 m) and a deck 29 ft wide.

Who owns Monson Ave over Alta East Branch Canal?

It is owned by the County Highway Agency.