Structure 29 0329 · San Joaquin County, CA

DR Mlk Jr BLVD over HWY 99

Carries DR Mlk Jr BLVD over HWY 99, 10-sj-099-18.02-stkn.

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 FT264 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

264 ft end to end, longest span 137 ft: about 4 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.

Built201610 years old
Length264.1 ft80.5 m
Daily traffic11,700counted 2015
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountySan Joaquin
Location10-sj-099-18.02-stkn
CarriesDR Mlk Jr BLVD
CrossesHWY 99
Coordinates37.95245, -121.23896

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length264.1 ft (80.5 m)
Max Span137.5 ft (41.9 m)
Deck Width63.0 ft (19.2 m)
Deck Area1545.6 sq m
Main Spans2
Year Built2016

Traffic

Avg Daily Traffic11,700 (2015)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number29 0329

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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