Structure 2C 964 · Salt Lake County, UT

I-80EB Off-ramp over Highland Drive

Carries I-80EB Off-ramp over Highland Drive, 2400 So.highland Dr.in Sl.

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 FT278 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

278 ft end to end, longest span 137 ft: about 4 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.

Built201016 years old
Length278.2 ft84.8 m
Daily traffic—reported figure implausible
Last inspectedAugust 2024every 24 months

Location

StateUtah
CountySalt Lake
Location2400 So.highland Dr.in Sl
CarriesI-80EB Off-ramp
CrossesHighland Drive
Coordinates40.71935, -111.85727

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length278.2 ft (84.8 m)
Max Span137.1 ft (41.8 m)
Deck Width42.7 ft (13 m)
Deck Area1102.4 sq m
Main Spans2
Year Built2010

Traffic

Avg Daily Traffic107,885 (2014)
That is about 53,942 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 Traffic30%
Lanes On Bridge2
Lanes Under Bridge3

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number2C 964

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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