US Bridges

Brannon Ave over Colony Main Canal

Fair

Merced County, California · 0.55 MI N Shain Ave · Structure no. 39C0370

Built
1966
59 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
79 ft
3 main spans
Daily traffic
1,000
2005 count
Owner
County
County Highway Agency

About this bridge

Brannon Ave over Colony Main Canal is a concrete stringer/multi-beam or girder carrying Brannon Ave over Colony Main Canal in Merced County, California. It was built in 1966, so it is 59 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 1,000 vehicles a day, roughly 5% of them trucks, projected to reach 1,582 by 2046. The structure is 79 ft (24.1 m) long and 34 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesBrannon Ave
CrossesColony Main Canal
Location0.55 MI N Shain Ave
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates36.97493, -120.59947
Functional classRural Minor 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 protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 48 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating35.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length79 ft (24.1 m)
Longest span27 ft (8.2 m)
Deck width34 ft (10.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2005)
Projected traffic1,582 by 2046
Trucks5%
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 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 Brannon Ave over Colony Main Canal built?

It was built in 1966, making it 59 years old in 2025.

What condition is Brannon Ave over Colony Main 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 Brannon Ave over Colony Main Canal carry?

About 1,000 vehicles per day (2005 count), of which roughly 5% are trucks.

How long is Brannon Ave over Colony Main Canal?

The structure is 79 ft (24.1 m) long with a longest span of 27 ft (8.2 m) and a deck 34 ft wide.

Who owns Brannon Ave over Colony Main Canal?

It is owned by the County Highway Agency.