Structure 29C0152 · San Joaquin County, CA

Howard Road over Middle River

Carries Howard Road over Middle River, Just East Wing Levee Road.

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
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT226 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

226 ft end to end, longest span 28 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 slab bridge.

Built196858 years old
Length226.0 ft68.9 m
Daily traffic1,801counted 2013
Last inspectedSeptember 2023every 48 months

Location

StateCalifornia
CountySan Joaquin
LocationJust East Wing Levee Road
CarriesHoward Road
CrossesMiddle River
Coordinates37.87698, -121.38371

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length226.0 ft (68.9 m)
Max Span27.9 ft (8.5 m)
Deck Width42.0 ft (12.8 m)
Deck Area881.9 sq m
Main Spans8
Year Built1968

Traffic

Avg Daily Traffic1,801 (2013)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number29C0152

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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