US Bridges

South 100 West over Logan River

Good

Cache County, Utah · 700 S 100 W Logan · Structure no. 005066F

Built
2023
2 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
150 ft
1 main span
Daily traffic
1,000
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

South 100 West over Logan River is a prestressed concrete stringer/multi-beam or girder carrying South 100 West over Logan River in Cache County, Utah. It was built in 2023, so it is 2 years old, younger than the Utah average of 40.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,000 vehicles a day, roughly 1% of them trucks, projected to reach 1,250 by 2043. The structure is 150 ft (45.6 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSouth 100 West
CrossesLogan River
Location700 S 100 W Logan
RouteCity Street 0
CountyCache County
StateUtah
Coordinates41.71956, -111.83697
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour evaluation has not been made
Structural evaluation*: *
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating—
Inventory rating—

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length150 ft (45.6 m)
Longest span145 ft (44.2 m)
Deck width80 ft (24.4 m)
Roadway width61 ft (18.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,250 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was South 100 West over Logan River built?

It was built in 2023, making it 2 years old in 2025.

What condition is South 100 West over Logan River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2023.

How much traffic does South 100 West over Logan River carry?

About 1,000 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is South 100 West over Logan River?

The structure is 150 ft (45.6 m) long with a longest span of 145 ft (44.2 m) and a deck 80 ft wide.

Who owns South 100 West over Logan River?

It is owned by the City or Municipal Highway Agency.