Structure 46C0018 · Tulare County, CA

Road 168 over ST Johns River

Carries Road 168 over ST Johns River, 0.7 Mi N Of AVE 308.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT255 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

255 ft end to end, longest span 36 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 slab bridge.

Built194779 years old
Length254.9 ft77.7 m
Daily traffic1,000counted 2015
Last inspectedDecember 2024every 24 months

Location

StateCalifornia
CountyTulare
Location0.7 Mi N Of AVE 308
CarriesRoad 168
CrossesST Johns River
Coordinates36.35847, -119.19766

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length254.9 ft (77.7 m)
Max Span36.1 ft (11 m)
Deck Width29.9 ft (9.1 m)
Deck Area707.1 sq m
Main Spans7
Year Built1947

Traffic

Avg Daily Traffic1,000 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number46C0018

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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