Structure 2C 554 · Salt Lake County, UT

Rp.i15sb To I215eb over I-215 (sr-215) Wbl

Carries Rp.i15sb To I215eb over I-215 (sr-215) Wbl, 6400 South Interchange.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT156 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

156 ft end to end, longest span 69 ft: about 2 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 multi-beam bridge.

Built197353 years old
Length155.5 ft47.4 m
Daily traffic—reported figure implausible
Last inspectedOctober 2024every 24 months

Location

StateUtah
CountySalt Lake
Location6400 South Interchange
CarriesRp.i15sb To I215eb
CrossesI-215 (sr-215) Wbl
Coordinates40.63641, -111.90707

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length155.5 ft (47.4 m)
Max Span69.2 ft (21.1 m)
Deck Width42.0 ft (12.8 m)
Deck Area606.7 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic230,000 (2014)
That is about 115,000 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic25%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2C 554

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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