Structure 14C0089 · Lake County, CA

Elk Mountain RD over Soda Creek

Carries Elk Mountain RD over Soda Creek, Simmons RD In Hullville.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 4/9 · sets the rating

51 ft end to end. Lengths and the car 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 multi-beam bridge.

Built197947 years old
Length50.9 ft15.5 m
Daily traffic169counted 2009
Last inspectedFebruary 2024every 24 months

Location

StateCalifornia
CountyLake
LocationSimmons RD In Hullville
CarriesElk Mountain RD
CrossesSoda Creek
Coordinates39.41994, -122.97918

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length50.9 ft (15.5 m)
Max Span48.9 ft (14.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area141.1 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic169 (2009)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number14C0089

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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