US Bridges

400 North over US-89

Good

Davis County, Utah · US-89 under 200 N · Structure no. 0F 904

Built
2021
4 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
143 ft
2 main spans
Daily traffic
6,663
2019 count
Owner
State
State Highway Agency

About this bridge

400 North over US-89 is a prestressed concrete stringer/multi-beam or girder carrying 400 North over US-89 in Davis County, Utah. It was built in 2021, so it is 4 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 6,663 vehicles a day, roughly 5% of them trucks, projected to reach 11,800 by 2039. The structure is 143 ft (43.6 m) long and 77 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries400 North
CrossesUS-89
LocationUS-89 under 200 N
RouteCity Street 1442
StateUtah
Coordinates41.04262, -111.90994
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length143 ft (43.6 m)
Longest span72 ft (21.8 m)
Deck width77 ft (23.4 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic6,663 (2019)
Projected traffic11,800 by 2039
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 400 North over US-89 built?

It was built in 2021, making it 4 years old in 2025.

What condition is 400 North over US-89 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 June 2023.

How much traffic does 400 North over US-89 carry?

About 6,663 vehicles per day (2019 count), of which roughly 5% are trucks.

How long is 400 North over US-89?

The structure is 143 ft (43.6 m) long with a longest span of 72 ft (21.8 m) and a deck 77 ft wide.

Who owns 400 North over US-89?

It is owned by the State Highway Agency.