Structure 4C 848 · Salt Lake County, UT

Rp.i80wb To I15sb over Rp.i80wb Toi15nb &nb Rps

Carries Rp.i80wb To I15sb over Rp.i80wb Toi15nb &nb Rps, I15 I80 Sr201 Int.@2400 S.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT532 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

532 ft end to end, longest span 177 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 multi-beam bridge.

Built200026 years old
Length531.8 ft162.1 m
Daily traffic29,634counted 2012
Last inspectedSeptember 2024every 23 months

Location

StateUtah
CountySalt Lake
LocationI15 I80 Sr201 Int.@2400 S
CarriesRp.i80wb To I15sb
CrossesRp.i80wb Toi15nb &nb Rps
Coordinates40.71848, -111.90050

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length531.8 ft (162.1 m)
Max Span176.8 ft (53.9 m)
Deck Width92.8 ft (28.3 m)
Deck Area4587.4 sq m
Main Spans4
Year Built2000

Traffic

Avg Daily Traffic29,634 (2012)
Truck Traffic25%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 23 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number4C 848

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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