US Bridges

IRR SR 98 over Kaibito Wash

Fair

Coconino County, Arizona · 29.0 MI N JCT US 160 · Structure no. 06560

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
51 ft
1 main span
Daily traffic
2,983
2022 count
Owner
State
State Highway Agency

About this bridge

IRR SR 98 over Kaibito Wash is a steel culvert carrying IRR SR 98 over Kaibito Wash in Coconino County, Arizona. It was built in 1972, so it is 53 years old, older 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 2,983 vehicles a day, roughly 13% of them trucks, projected to reach 2,993 by 2042. The structure is 51 ft (15.5 m) long. If it were closed, the detour would be 47.8 mi (77 km).

Location

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CarriesIRR SR 98
CrossesKaibito Wash
Location29.0 MI N JCT US 160
RouteState Highway 98
CountyCoconino County
StateArizona
Coordinates36.61041, -111.07555
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,983 (2022)
Projected traffic2,993 by 2042
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR SR 98 over Kaibito Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is IRR SR 98 over Kaibito Wash 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 September 2024.

How much traffic does IRR SR 98 over Kaibito Wash carry?

About 2,983 vehicles per day (2022 count), of which roughly 13% are trucks.

How long is IRR SR 98 over Kaibito Wash?

The structure is 51 ft (15.5 m) long with a longest span of 20 ft (6.1 m).

Who owns IRR SR 98 over Kaibito Wash?

It is owned by the State Highway Agency.