Structure 8C0113 · Tehama County, CA

Old HWY 99 W over Elder Creek

Carries Old HWY 99 W over Elder Creek, 3.3 Mi N Gyle RD.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT141 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

141 ft end to end, longest span 34 ft. 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 tee-beam bridge.

Built1917rebuilt 1951
Length141.1 ft43 m
Daily traffic4,000counted 2006
Last inspectedSeptember 2024every 24 months

Location

StateCalifornia
CountyTehama
Location3.3 Mi N Gyle RD
CarriesOld HWY 99 W
CrossesElder Creek
Coordinates40.05152, -122.17013

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length141.1 ft (43 m)
Max Span34.4 ft (10.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area421.4 sq m
Main Spans4
Year Built1917 (reconstructed 1951)

Traffic

Avg Daily Traffic4,000 (2006)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number08C0113

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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