US Bridges

47-Z024 over Unnamed Waterway

Fair

San Miguel County, New Mexico · 0.15 M SE of I-25 Frtg RD · Structure no. 000000000008520

Built
1983
42 years old
Condition
Fair
inspected July 2024
Type
Tee Beam
Prestressed Concrete
Length
52 ft
1 main span
Daily traffic
210
2023 count
Owner
County
County Highway Agency

About this bridge

47-Z024 over Unnamed Waterway is a prestressed concrete tee beam carrying 47-Z024 over Unnamed Waterway in San Miguel County, New Mexico. It was built in 1983, so it is 42 years old, younger 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 210 vehicles a day, projected to reach 285 by 2043. The structure is 52 ft (15.9 m) long and 24 ft wide. If it were closed, the detour would be 75.2 mi (121 km).

Location

Open in Google Maps
Carries47-Z024
CrossesUnnamed Waterway
Location0.15 M SE of I-25 Frtg RD
RouteCounty Highway 47024
CountySan Miguel County
StateNew Mexico
Coordinates35.52559, -105.23529
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span50 ft (15.2 m)
Deck width24 ft (7.4 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic210 (2023)
Projected traffic285 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed75.2 mi (121 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$75,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 47-Z024 over Unnamed Waterway built?

It was built in 1983, making it 42 years old in 2025.

What condition is 47-Z024 over Unnamed Waterway 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 July 2024.

How much traffic does 47-Z024 over Unnamed Waterway carry?

About 210 vehicles per day (2023 count).

How long is 47-Z024 over Unnamed Waterway?

The structure is 52 ft (15.9 m) long with a longest span of 50 ft (15.2 m) and a deck 24 ft wide.

Who owns 47-Z024 over Unnamed Waterway?

It is owned by the County Highway Agency.