Structure B1351 · Washoe County, NV

SR 447 Gerlach RD over Truckee Rvr

Carries SR 447 Gerlach RD over Truckee Rvr, South Of Nixon.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT211 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

211 ft end to end, longest span 70 ft: about 3 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.

Built197254 years old
Length211.0 ft64.3 m
Daily traffic1,300counted 2021
Last inspectedApril 2023every 24 months

Location

StateNevada
CountyWashoe
LocationSouth Of Nixon
CarriesSR 447 Gerlach RD
CrossesTruckee Rvr
Coordinates39.82914, -119.36114

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length211.0 ft (64.3 m)
Max Span69.9 ft (21.3 m)
Deck Width44.0 ft (13.4 m)
Deck Area861.6 sq m
Main Spans3
Year Built1972

Traffic

Avg Daily Traffic1,300 (2021)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure NumberB1351

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.