Structure 39C0250 · Merced County, CA

Mccabe Road over California Aqueduct

Carries Mccabe Road over California Aqueduct, 2.6 Mi West Of I-5.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT145 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 6/9

145 ft end to end, longest span 73 ft: about 2 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196858 years old
Length145.0 ft44.2 m
Daily traffic50counted 1990
Last inspectedJanuary 2023every 24 months

Location

StateCalifornia
CountyMerced
Location2.6 Mi West Of I-5
CarriesMccabe Road
CrossesCalifornia Aqueduct
Coordinates37.12109, -121.05768

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length145.0 ft (44.2 m)
Max Span72.5 ft (22.1 m)
Deck Width29.9 ft (9.1 m)
Deck Area402.2 sq m
Main Spans2
Year Built1968

Traffic

Avg Daily Traffic50 (1990)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2023
Inspection FrequencyEvery 24 months
OwnerOther State Agencies
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number39C0250

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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