US Bridges

IRR US 163 over El Capitan Wash

Good

Navajo County, Arizona · 12.4 MI N JCT US 160 · Structure no. 07116

Built
2001
24 years old
Condition
Good
inspected September 2022
Type
Culvert
Concrete Continuous
Length
46 ft
5 main spans
Daily traffic
3,152
2017 count
Owner
State
State Highway Agency

About this bridge

IRR US 163 over El Capitan Wash is a concrete continuous culvert carrying IRR US 163 over El Capitan Wash in Navajo County, Arizona. It was built in 2001, so it is 24 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 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 3,152 vehicles a day, roughly 7% of them trucks, projected to reach 3,162 by 2038. The structure is 46 ft (14 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR US 163
CrossesEl Capitan Wash
Location12.4 MI N JCT US 160
RouteU.S. Route 163
CountyNavajo County
StateArizona
Coordinates36.8597, -110.2673
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length46 ft (14 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,152 (2017)
Projected traffic3,162 by 2038
Trucks7%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR US 163 over El Capitan Wash built?

It was built in 2001, making it 24 years old in 2025.

What condition is IRR US 163 over El Capitan 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 2022.

How much traffic does IRR US 163 over El Capitan Wash carry?

About 3,152 vehicles per day (2017 count), of which roughly 7% are trucks.

How long is IRR US 163 over El Capitan Wash?

The structure is 46 ft (14 m) long with a longest span of 8 ft (2.4 m).

Who owns IRR US 163 over El Capitan Wash?

It is owned by the State Highway Agency.