Structure 8480002P0000000 · Humboldt County, CA

Geneva Road over Lost Man Creek

Carries Geneva Road over Lost Man Creek, 0.8 Miles East Of Jct. Hw.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT77 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

77 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.

Built1973rebuilt 2021
Length77.1 ft23.5 m
Daily traffic120counted 2019
Last inspectedJuly 2024every 24 months

Location

StateCalifornia
CountyHumboldt
Location0.8 Miles East Of Jct. Hw
CarriesGeneva Road
CrossesLost Man Creek
Coordinates41.32717, -124.01564

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length77.1 ft (23.5 m)
Max Span71.9 ft (21.9 m)
Deck Width23.0 ft (7 m)
Deck Area164.5 sq m
Main Spans1
Year Built1973 (reconstructed 2021)

Traffic

Avg Daily Traffic120 (2019)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number8480002P0000000

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.

Nearby Bridges