US Bridges

US-89 (SR-89) over Logan River

Fair

Cache County, Utah · 3.3 Miles E. of Logan · Structure no. 0F 723

Built
2005
20 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
107 ft
1 main span
Daily traffic
5,254
2021 count
Owner
State
State Highway Agency

About this bridge

US-89 (SR-89) over Logan River is a prestressed concrete stringer/multi-beam or girder carrying US-89 (SR-89) over Logan River in Cache County, Utah. It was built in 2005, so it is 20 years old, younger 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 6 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 5,254 vehicles a day, roughly 37% of them trucks, projected to reach 6,305 by 2041. The structure is 107 ft (32.7 m) long and 44 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesUS-89 (SR-89)
CrossesLogan River
Location3.3 Miles E. of Logan
RouteU.S. Route 89
CountyCache County
StateUtah
Coordinates41.74171, -111.77467
Functional classRural Principal Arterial - Other

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating47.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length107 ft (32.7 m)
Longest span105 ft (31.9 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,254 (2021)
Projected traffic6,305 by 2041
Trucks37%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

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 US-89 (SR-89) over Logan River built?

It was built in 2005, making it 20 years old in 2025.

What condition is US-89 (SR-89) over Logan River 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 July 2023.

How much traffic does US-89 (SR-89) over Logan River carry?

About 5,254 vehicles per day (2021 count), of which roughly 37% are trucks.

How long is US-89 (SR-89) over Logan River?

The structure is 107 ft (32.7 m) long with a longest span of 105 ft (31.9 m) and a deck 44 ft wide.

Who owns US-89 (SR-89) over Logan River?

It is owned by the State Highway Agency.