Structure 24 0100L · Sacramento County, CA

ST RTE 160 SB Lrt over Up Rr Bnsf Ry Northgate

Carries ST RTE 160 SB Lrt over Up Rr Bnsf Ry Northgate, 03-sac-160-r44.65-sac.

Overall conditionFair

Set by its lowest-rated component: Deck at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,496 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,496 ft end to end, longest span 41 ft: about 4.2 football fields. 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.

Built194284 years old
Length1496.1 ft456 m
Daily traffic26,500counted 2009
Last inspectedJune 2023every 24 months

Location

StateCalifornia
CountySacramento
Location03-sac-160-r44.65-sac
CarriesST RTE 160 SB Lrt
CrossesUp Rr Bnsf Ry Northgate
Coordinates38.59759, -121.47469

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length1496.1 ft (456 m)
Max Span41.0 ft (12.5 m)
Deck Width65.6 ft (20 m)
Deck Area9,120 sq m
Main Spans36
Year Built1942

Traffic

Avg Daily Traffic26,500 (2009)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number24 0100L

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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