US Bridges

North Road over Ruby Drain

Fair

Navajo County, Arizona · 0.5 MI E JCT North Prk DR · Structure no. 09900

Built
1979
46 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
130 ft
4 main spans
Daily traffic
1,652
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

North Road over Ruby Drain is a concrete continuous slab carrying North Road over Ruby Drain in Navajo County, Arizona. It was built in 1979, so it is 46 years old, younger than the Arizona average of 47.8 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 1,652 vehicles a day, roughly 5% of them trucks, projected to reach 1,662 by 2042. The structure is 130 ft (39.6 m) long and 29 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesNorth Road
CrossesRuby Drain
Location0.5 MI E JCT North Prk DR
RouteCity Street 0
CountyNavajo County
StateArizona
Coordinates35.03892, -110.69033
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating94 US tons
Inventory rating56 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span35 ft (10.7 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck25 ft (7.6 m)

Traffic and service

Average daily traffic1,652 (2022)
Projected traffic1,662 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 North Road over Ruby Drain built?

It was built in 1979, making it 46 years old in 2025.

What condition is North Road over Ruby Drain 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 June 2024.

How much traffic does North Road over Ruby Drain carry?

About 1,652 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is North Road over Ruby Drain?

The structure is 130 ft (39.6 m) long with a longest span of 35 ft (10.7 m) and a deck 29 ft wide.

Who owns North Road over Ruby Drain?

It is owned by the City or Municipal Highway Agency.