US Bridges

Navajo Blvd over South Fork Puerco River

Poor

McKinley County, New Mexico · North Gate · Structure no. DAPATEWIN000070

Built
1943
82 years old
Condition
Poor
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
65 ft
1 main span
Daily traffic
5
2021 count
Owner
Federal
Army

About this bridge

Navajo Blvd over South Fork Puerco River is a steel stringer/multi-beam or girder carrying Navajo Blvd over South Fork Puerco River in McKinley County, New Mexico. It was built in 1943, so it is 82 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 5 vehicles a day, projected to reach 10 by 2044. The structure is 65 ft (19.9 m) long and 29 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesNavajo Blvd
CrossesSouth Fork Puerco River
LocationNorth Gate
Coordinates35.52002, -108.5859
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating28.9 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length65 ft (19.9 m)
Longest span61 ft (18.6 m)
Deck width29 ft (8.7 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5 (2021)
Projected traffic10 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerArmy
Maintained byArmy
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$2,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Navajo Blvd over South Fork Puerco River built?

It was built in 1943, making it 82 years old in 2025.

What condition is Navajo Blvd over South Fork Puerco River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2023.

How much traffic does Navajo Blvd over South Fork Puerco River carry?

About 5 vehicles per day (2021 count).

How long is Navajo Blvd over South Fork Puerco River?

The structure is 65 ft (19.9 m) long with a longest span of 61 ft (18.6 m) and a deck 29 ft wide.

Who owns Navajo Blvd over South Fork Puerco River?

It is owned by the Army.