Structure 29 0243 · San Joaquin County, CA

Blewett Road over Interstate Route 5

Carries Blewett Road over Interstate Route 5, 10-sj-005-2.46.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT206 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

206 ft end to end, longest span 102 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 box-beam bridge.

Built197155 years old
Length206.0 ft62.8 m
Daily traffic74counted 1998
Last inspectedSeptember 2024every 48 months

Location

StateCalifornia
CountySan Joaquin
Location10-sj-005-2.46
CarriesBlewett Road
CrossesInterstate Route 5
Coordinates37.62344, -121.34333

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length206.0 ft (62.8 m)
Max Span102.0 ft (31.1 m)
Deck Width34.1 ft (10.4 m)
Deck Area653.1 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic74 (1998)
Truck Traffic4%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number29 0243

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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