Structure 44 0012 · Monterey County, CA

State Route 1 over Granite Canyon

Carries State Route 1 over Granite Canyon, 05-mon-001-64.33.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT288 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

288 ft end to end: 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 deck arch.

Built1932rebuilt 1998
Length288.1 ft87.8 m
Daily traffic11,100counted 2009
Last inspectedJuly 2023every 24 months

Location

StateCalifornia
CountyMonterey
Location05-mon-001-64.33
CarriesState Route 1
CrossesGranite Canyon
Coordinates36.43539, -121.91887

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length288.1 ft (87.8 m)
Max Span127.0 ft (38.7 m)
Deck Width27.6 ft (8.4 m)
Deck Area737.5 sq m
Main Spans1
Year Built1932 (reconstructed 1998)

Traffic

Avg Daily Traffic11,100 (2009)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical9 — Foundation above flood level
Structure Number44 0012

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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