US Bridges

4400 South Street over I-15 (SR-15) Nbl and Sbl

Poor

Weber County, Utah · 4400 So.St.In Riverdale · Structure no. 0D 735

Built
1966
59 years old
Condition
Poor
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
239 ft
4 main spans
Daily traffic
9,768
2021 count
Owner
State
State Highway Agency

About this bridge

4400 South Street over I-15 (SR-15) Nbl and Sbl is a concrete continuous tee beam carrying 4400 South Street over I-15 (SR-15) Nbl and Sbl in Weber County, Utah. It was built in 1966, so it is 59 years old, older than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 9,768 vehicles a day, projected to reach 11,722 by 2041. The structure is 239 ft (72.9 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

No coordinates are recorded for this structure.

Carries4400 South Street
CrossesI-15 (SR-15) Nbl and Sbl
Location4400 So.St.In Riverdale
RouteCity Street 3316
CountyWeber County
StateUtah
Functional classUrban Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating54.7 US tons
Inventory rating35.4 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length239 ft (72.9 m)
Longest span81 ft (24.7 m)
Deck width33 ft (10.2 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,768 (2021)
Projected traffic11,722 by 2041
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.1 mi (5 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 4400 South Street over I-15 (SR-15) Nbl and Sbl built?

It was built in 1966, making it 59 years old in 2025.

What condition is 4400 South Street over I-15 (SR-15) Nbl and Sbl in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2023.

How much traffic does 4400 South Street over I-15 (SR-15) Nbl and Sbl carry?

About 9,768 vehicles per day (2021 count).

How long is 4400 South Street over I-15 (SR-15) Nbl and Sbl?

The structure is 239 ft (72.9 m) long with a longest span of 81 ft (24.7 m) and a deck 33 ft wide.

Who owns 4400 South Street over I-15 (SR-15) Nbl and Sbl?

It is owned by the State Highway Agency.