Structure 44 0099S · Monterey County, CA

SR 183 NB Main SB over US 101 N Main-n101 Onrp

Carries SR 183 NB Main SB over US 101 N Main-n101 Onrp, 05-mon-183-0.01-sal.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT518 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

518 ft end to end, longest span 97 ft: about 7 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.

Built196561 years old
Length518.0 ft157.9 m
Daily traffic19,992counted 2008
Last inspectedJune 2024every 24 months

Location

StateCalifornia
CountyMonterey
Location05-mon-183-0.01-sal
CarriesSR 183 NB Main SB
CrossesUS 101 N Main-n101 Onrp
Coordinates36.68696, -121.65311

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length518.0 ft (157.9 m)
Max Span97.4 ft (29.7 m)
Deck Width37.1 ft (11.3 m)
Deck Area1784.3 sq m
Main Spans6
Year Built1965

Traffic

Avg Daily Traffic19,992 (2008)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number44 0099S

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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