US Bridges

Mccabe Road over California Aqueduct

Fair

Merced County, California · 2.6 MI West of I-5 · Structure no. 39C0250

Built
1968
57 years old
Condition
Fair
inspected January 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
145 ft
2 main spans
Daily traffic
50
1990 count
Owner
State
Other State Agency

About this bridge

Mccabe Road over California Aqueduct is a prestressed concrete stringer/multi-beam or girder carrying Mccabe Road over California Aqueduct in Merced County, California. It was built in 1968, so it is 57 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 143 by 2045. The structure is 145 ft (44.2 m) long and 30 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesMccabe Road
CrossesCalifornia Aqueduct
Location2.6 MI West of I-5
RouteCounty Highway 0
Coordinates37.12109, -121.05767
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2023
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 geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.8 US tons
Inventory rating20.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length145 ft (44.2 m)
Longest span73 ft (22.1 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1990)
Projected traffic143 by 2045
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerOther State Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mccabe Road over California Aqueduct built?

It was built in 1968, making it 57 years old in 2025.

What condition is Mccabe Road over California Aqueduct 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 2023.

How much traffic does Mccabe Road over California Aqueduct carry?

About 50 vehicles per day (1990 count), of which roughly 5% are trucks.

How long is Mccabe Road over California Aqueduct?

The structure is 145 ft (44.2 m) long with a longest span of 73 ft (22.1 m) and a deck 30 ft wide.

Who owns Mccabe Road over California Aqueduct?

It is owned by the Other State Agency and maintained by the County Highway Agency.