US Bridges

US 163 over Laguna Wash

Good

Navajo County, Arizona · 2.7 MI N JCT US 160 · Structure no. 20088

Built
2020
5 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
515 ft
4 main spans
Daily traffic
1,998
2022 count
Owner
State
State Highway Agency

About this bridge

US 163 over Laguna Wash is a prestressed concrete continuous stringer/multi-beam or girder carrying US 163 over Laguna Wash in Navajo County, Arizona. It was built in 2020, so it is 5 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,998 vehicles a day, roughly 13% of them trucks, projected to reach 2,008 by 2042. The structure is 515 ft (157 m) long and 37 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesUS 163
CrossesLaguna Wash
Location2.7 MI N JCT US 160
RouteU.S. Route 163
CountyNavajo County
StateArizona
Coordinates36.7368, -110.2382
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHL 93
Structure length515 ft (157 m)
Longest span128 ft (39 m)
Deck width37 ft (11.2 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck99 ft (30.2 m)

Traffic and service

Average daily traffic1,998 (2022)
Projected traffic2,008 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$2,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 163 over Laguna Wash built?

It was built in 2020, making it 5 years old in 2025.

What condition is US 163 over Laguna Wash 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 September 2024.

How much traffic does US 163 over Laguna Wash carry?

About 1,998 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is US 163 over Laguna Wash?

The structure is 515 ft (157 m) long with a longest span of 128 ft (39 m) and a deck 37 ft wide.

Who owns US 163 over Laguna Wash?

It is owned by the State Highway Agency.