Structure 24 4106 · Sacramento County, CA

US 50-ramp A6-wb over Q ST Offramp 3rd ST

Carries US 50-ramp A6-wb over Q ST Offramp 3rd ST, 03-sac-050-l0.41-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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,023 FT OVERALL200 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,023 ft end to end, longest span 150 ft: about 2.8 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 multi-beam bridge.

Built197155 years old
Length1023.0 ft311.8 m
Daily traffic17,600counted 2020
Last inspectedOctober 2023every 24 months

Location

StateCalifornia
CountySacramento
Location03-sac-050-l0.41-sac
CarriesUS 50-ramp A6-wb
CrossesQ ST Offramp 3rd ST
Coordinates38.57034, -121.50875

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length1023.0 ft (311.8 m)
Max Span149.9 ft (45.7 m)
Deck Width39.0 ft (11.9 m)
Deck Area3710.4 sq m
Main Spans7
Year Built1971

Traffic

Avg Daily Traffic17,600 (2020)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number24 4106

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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