Structure 39C0034 · Merced County, CA

Childs AVE over Up Rr

Carries Childs AVE over Up Rr, 0.08 Mi W Of SR 99.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT240 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

240 ft end to end, longest span 66 ft: about 3 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.

Built196462 years old
Length240.2 ft73.2 m
Daily traffic6,938counted 2014
Last inspectedOctober 2022every 48 months

Location

StateCalifornia
CountyMerced
Location0.08 Mi W Of SR 99
CarriesChilds AVE
CrossesUp Rr
Coordinates37.28822, -120.45832

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length240.2 ft (73.2 m)
Max Span65.9 ft (20.1 m)
Deck Width40.0 ft (12.2 m)
Deck Area893.0 sq m
Main Spans4
Year Built1964

Traffic

Avg Daily Traffic6,938 (2014)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number39C0034

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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