Structure 29 0173L · San Joaquin County, CA

Interstate 5 SB over Shimizu DR & Smith Canal

Carries Interstate 5 SB over Shimizu DR & Smith Canal, 10-sj-005-28.26-stkn.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT407 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

407 ft end to end, longest span 57 ft: about 6 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 tee-beam bridge.

Built196858 years old
Length407.2 ft124.1 m
Daily traffic52,500counted 2009
Last inspectedJanuary 2025every 24 months

Location

StateCalifornia
CountySan Joaquin
Location10-sj-005-28.26-stkn
CarriesInterstate 5 SB
CrossesShimizu DR & Smith Canal
Coordinates37.96049, -121.33372

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length407.2 ft (124.1 m)
Max Span57.1 ft (17.4 m)
Deck Width74.1 ft (22.6 m)
Deck Area2804.7 sq m
Main Spans8
Year Built1968

Traffic

Avg Daily Traffic52,500 (2009)
Truck Traffic23%
Lanes On Bridge5
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number29 0173L

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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