US Bridges

FL-4192/AZTEC Ruin over Aztec Arroyo

Fair

San Juan County, New Mexico · 0.1 MI N of JCT NM-516 · Structure no. 000000000006223

Built
1960
65 years old
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
163 ft
3 main spans
Daily traffic
1,384
2023 count
Owner
State
State Highway Agency

About this bridge

FL-4192/AZTEC Ruin over Aztec Arroyo is a steel continuous stringer/multi-beam or girder carrying FL-4192/AZTEC Ruin over Aztec Arroyo in San Juan County, New Mexico. It was built in 1960, so it is 65 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 fair condition with a lowest component rating of 5 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 1,384 vehicles a day, roughly 5% of them trucks, projected to reach 1,882 by 2043. The structure is 163 ft (49.7 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesFL-4192/AZTEC Ruin
CrossesAztec Arroyo
Location0.1 MI N of JCT NM-516
RouteCity Street 4192
CountySan Juan County
StateNew Mexico
Coordinates36.82663, -108.00357
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length163 ft (49.7 m)
Longest span58 ft (17.7 m)
Deck width36 ft (11.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,384 (2023)
Projected traffic1,882 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$400,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was FL-4192/AZTEC Ruin over Aztec Arroyo built?

It was built in 1960, making it 65 years old in 2025.

What condition is FL-4192/AZTEC Ruin over Aztec Arroyo 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 May 2024.

How much traffic does FL-4192/AZTEC Ruin over Aztec Arroyo carry?

About 1,384 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is FL-4192/AZTEC Ruin over Aztec Arroyo?

The structure is 163 ft (49.7 m) long with a longest span of 58 ft (17.7 m) and a deck 36 ft wide.

Who owns FL-4192/AZTEC Ruin over Aztec Arroyo?

It is owned by the State Highway Agency.