Structure 44 0186L · Monterey County, CA

State Route 156 WB over Tembladero Slough

Carries State Route 156 WB over Tembladero Slough, 05-mon-156-r0.90.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT452 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

452 ft end to end, longest span 42 ft: about 6 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 tee-beam bridge.

Built196660 years old
Length452.1 ft137.8 m
Daily traffic14,925counted 2009
Last inspectedAugust 2024every 24 months

Location

StateCalifornia
CountyMonterey
Location05-mon-156-r0.90
CarriesState Route 156 WB
CrossesTembladero Slough
Coordinates36.75965, -121.75522

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length452.1 ft (137.8 m)
Max Span42.0 ft (12.8 m)
Deck Width49.9 ft (15.2 m)
Deck Area2094.6 sq m
Main Spans11
Year Built1966

Traffic

Avg Daily Traffic14,925 (2009)
Truck Traffic8%
Lanes On Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number44 0186L

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