US Bridges

SR-104 20th ST over Weber River & Co. Ro

Fair

Weber County, Utah · 0.5 Mi. E. Wilson Ln. Int · Structure no. 0C 613

Built
1976
49 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
265 ft
2 main spans
Daily traffic
15,989
2021 count
Owner
State
State Highway Agency

About this bridge

SR-104 20th ST over Weber River & Co. Ro is a steel continuous stringer/multi-beam or girder carrying SR-104 20th ST over Weber River & Co. Ro in Weber County, Utah. It was built in 1976, so it is 49 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 15,989 vehicles a day, roughly 30% of them trucks, projected to reach 19,187 by 2041. The structure is 265 ft (80.8 m) long and 86 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesSR-104 20th ST
CrossesWeber River & Co. Ro
Location0.5 Mi. E. Wilson Ln. Int
RouteState Highway 104
CountyWeber County
StateUtah
Coordinates41.22983, -112.00025
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.5 US tons
Inventory rating24.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length265 ft (80.8 m)
Longest span131 ft (40 m)
Deck width86 ft (26.2 m)
Roadway width82 ft (25.1 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic15,989 (2021)
Projected traffic19,187 by 2041
Trucks30%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-104 20th ST over Weber River & Co. Ro built?

It was built in 1976, making it 49 years old in 2025.

What condition is SR-104 20th ST over Weber River & Co. Ro in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2023.

How much traffic does SR-104 20th ST over Weber River & Co. Ro carry?

About 15,989 vehicles per day (2021 count), of which roughly 30% are trucks.

How long is SR-104 20th ST over Weber River & Co. Ro?

The structure is 265 ft (80.8 m) long with a longest span of 131 ft (40 m) and a deck 86 ft wide.

Who owns SR-104 20th ST over Weber River & Co. Ro?

It is owned by the State Highway Agency.