Structure 1F 744 · Weber County, UT

I-15NB (sr-15) over Weber River

Carries I-15NB (sr-15) over Weber River, No. Of Wilson Ln. Intchg..

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT142 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

142 ft end to end. 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.

Built200818 years old
Length142.1 ft43.3 m
Daily traffic94,016counted 2022
Last inspectedAugust 2023every 24 months

Location

StateUtah
CountyWeber
LocationNo. Of Wilson Ln. Intchg.
CarriesI-15NB (sr-15)
CrossesWeber River
Coordinates41.23696, -112.01397

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length142.1 ft (43.3 m)
Max Span139.1 ft (42.4 m)
Deck Width76.8 ft (23.4 m)
Deck Area1013.2 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic94,016 (2022)
Truck Traffic34%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1F 744

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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