Structure 55C0043 · Orange County, CA

Tustin Street over Santiago Creek Channel

Carries Tustin Street over Santiago Creek Channel, 0.3 Mi. N/o Route 22 FWY.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT239 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

239 ft end to end, longest span 52 ft: about 3 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.

Built1941rebuilt 1986
Length238.8 ft72.8 m
Daily traffic27,600counted 2021
Last inspectedApril 2023every 24 months

Location

StateCalifornia
CountyOrange
Location0.3 Mi. N/o Route 22 FWY
CarriesTustin Street
CrossesSantiago Creek Channel
Coordinates33.77984, -117.83561

Physical Characteristics

MaterialConcrete Continuous
DesignTee Beam
Total Length238.8 ft (72.8 m)
Max Span51.8 ft (15.8 m)
Deck Width96.1 ft (29.3 m)
Deck Area2133.0 sq m
Main Spans5
Year Built1941 (reconstructed 1986)

Traffic

Avg Daily Traffic27,600 (2021)
Truck Traffic1%
Lanes On Bridge6

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number55C0043

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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