Structure 1C 833 · Salt Lake County, UT

Rp.i-15nbtoi-215wb over Uprr 6400 S.& I-215EB

Carries Rp.i-15nbtoi-215wb over Uprr 6400 S.& I-215EB, 400 W.6400 So.in Murray.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,356 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

1,356 ft end to end, longest span 177 ft: about 3.8 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.

Built199828 years old
Length1356.3 ft413.4 m
Daily traffic—reported figure implausible
Last inspectedOctober 2024every 24 months

Location

StateUtah
CountySalt Lake
Location400 W.6400 So.in Murray
CarriesRp.i-15nbtoi-215wb
CrossesUprr 6400 S.& I-215EB
Coordinates40.63140, -111.90242

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1356.3 ft (413.4 m)
Max Span177.2 ft (54 m)
Deck Width43.0 ft (13.1 m)
Deck Area5415.5 sq m
Main Spans6
Year Built1998

Traffic

Avg Daily Traffic246,810 (2014)
That is about 123,405 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 Traffic27%
Lanes On Bridge2
Lanes Under Bridge7

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 Number1C 833

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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