Structure 38 0116R · Stanislaus County, CA

Interstate 5 NB over Oak Flat Road

Carries Interstate 5 NB over Oak Flat Road, 10-sta-005-12.53.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 7/9Substructure 7/9

104 ft end to end, longest span 42 ft. Lengths and the car 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 tee-beam bridge.

Built196759 years old
Length104.0 ft31.7 m
Daily traffic18,000counted 2009
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountyStanislaus
Location10-sta-005-12.53
CarriesInterstate 5 NB
CrossesOak Flat Road
Coordinates37.42086, -121.15267

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length104.0 ft (31.7 m)
Max Span42.0 ft (12.8 m)
Deck Width42.3 ft (12.9 m)
Deck Area408.9 sq m
Main Spans3
Year Built1967

Traffic

Avg Daily Traffic18,000 (2009)
Truck Traffic25%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number38 0116R

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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