Structure 47690 · St. Joseph County, IN

I-90 EB over ST Joseph River

Carries I-90 EB over ST Joseph River, 00.87 W SR 933.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT492 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 6/9

492 ft end to end, longest span 125 ft: about 7 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 girder bridge.

Built1956rebuilt 1987
Length491.8 ft149.9 m
Daily traffic13,860counted 2011
Last inspectedJuly 2023every 24 months

Location

StateIndiana
CountySt. Joseph
Location00.87 W SR 933
CarriesI-90 EB
CrossesST Joseph River
Coordinates41.72239, -86.26724

Physical Characteristics

MaterialSteel Continuous
DesignGirder and Floorbeam
Total Length491.8 ft (149.9 m)
Max Span124.7 ft (38 m)
Deck Width44.9 ft (13.7 m)
Deck Area2053.6 sq m
Main Spans4
Year Built1956 (reconstructed 1987)

Traffic

Avg Daily Traffic13,860 (2011)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Toll Authority
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number047690

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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