US Bridges

Griffith Avenue over High Line Canal

Fair

Merced County, California · 1.15 MI South Bloss Ave · Structure no. 39C0313

Built
1948
77 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
204
2008 count
Owner
County
County Highway Agency

About this bridge

Griffith Avenue over High Line Canal is a concrete continuous slab carrying Griffith Avenue over High Line Canal in Merced County, California. It was built in 1948, so it is 77 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 5 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 204 vehicles a day, roughly 22% of them trucks, projected to reach 492 by 2042. The structure is 24 ft (7.3 m) long and 26 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesGriffith Avenue
CrossesHigh Line Canal
Location1.15 MI South Bloss Ave
RouteCounty Highway 0
CountyMerced County
StateCalifornia
Coordinates37.38673, -120.81387
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating29.7 US tons
Inventory rating17.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length24 ft (7.3 m)
Longest span11 ft (3.5 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic204 (2008)
Projected traffic492 by 2042
Trucks22%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 Griffith Avenue over High Line Canal built?

It was built in 1948, making it 77 years old in 2025.

What condition is Griffith 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 Griffith Avenue over High Line Canal carry?

About 204 vehicles per day (2008 count), of which roughly 22% are trucks.

How long is Griffith Avenue over High Line Canal?

The structure is 24 ft (7.3 m) long with a longest span of 11 ft (3.5 m) and a deck 26 ft wide.

Who owns Griffith Avenue over High Line Canal?

It is owned by the County Highway Agency.