US Bridges

IRR BIA RTE N67 over Tse Chizzi Wash

Fair

Navajo County, Arizona · 0.5 MI N of Low Mountain · Structure no. 00000000000N517

Built
1977
48 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
107 ft
1 main span
Daily traffic
602
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N67 over Tse Chizzi Wash is a steel stringer/multi-beam or girder carrying IRR BIA RTE N67 over Tse Chizzi Wash in Navajo County, Arizona. It was built in 1977, so it is 48 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 602 vehicles a day, roughly 5% of them trucks, projected to reach 704 by 2043. The structure is 107 ft (32.5 m) long and 31 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N67
CrossesTse Chizzi Wash
Location0.5 MI N of Low Mountain
RouteFederal Lands Road 0N67
CountyNavajo County
StateArizona
Coordinates35.94706, -110.1125
Functional classRural Local

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46 US tons
Inventory rating27.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length107 ft (32.5 m)
Longest span100 ft (30.5 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic602 (2023)
Projected traffic704 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$70,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE N67 over Tse Chizzi Wash built?

It was built in 1977, making it 48 years old in 2025.

What condition is IRR BIA RTE N67 over Tse Chizzi 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 March 2023.

How much traffic does IRR BIA RTE N67 over Tse Chizzi Wash carry?

About 602 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE N67 over Tse Chizzi Wash?

The structure is 107 ft (32.5 m) long with a longest span of 100 ft (30.5 m) and a deck 31 ft wide.

Who owns IRR BIA RTE N67 over Tse Chizzi Wash?

It is owned by the Bureau of Indian Affairs.