Structure 24C0107L · Sacramento County, CA

Howe AVE SB over American River

Carries Howe AVE SB over American River, 0.4 Mi N/o SR 50.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,162 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

1,162 ft end to end, longest span 110 ft: about 3.2 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 box-beam bridge.

Built196957 years old
Length1162.1 ft354.2 m
Daily traffic30,272counted 2017
Last inspectedMarch 2024every 24 months

Location

StateCalifornia
CountySacramento
Location0.4 Mi N/o SR 50
CarriesHowe AVE SB
CrossesAmerican River
Coordinates38.55822, -121.40947

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length1162.1 ft (354.2 m)
Max Span109.9 ft (33.5 m)
Deck Width36.7 ft (11.2 m)
Deck Area3967.0 sq m
Main Spans11
Year Built1969

Traffic

Avg Daily Traffic30,272 (2017)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number24C0107L

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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