US Bridges

33-B028 over Rio De Casa

Fair

Mora County, New Mexico · 4.1 M SW NM-518/CLEVELAND · Structure no. 000000000008300

Built
1980
45 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
189
2023 count
Owner
County
County Highway Agency

About this bridge

33-B028 over Rio De Casa is a prestressed concrete tee beam carrying 33-B028 over Rio De Casa in Mora County, New Mexico. It was built in 1980, so it is 45 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 189 vehicles a day, projected to reach 257 by 2043. The structure is 27 ft (8.2 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
Carries33-B028
CrossesRio De Casa
Location4.1 M SW NM-518/CLEVELAND
RouteCounty Highway 33028
CountyMora County
StateNew Mexico
Coordinates35.97985, -105.41361
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 inspectionSeptember 2023
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 rating26.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 15
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic189 (2023)
Projected traffic257 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$500,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 33-B028 over Rio De Casa built?

It was built in 1980, making it 45 years old in 2025.

What condition is 33-B028 over Rio De Casa 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 2023.

How much traffic does 33-B028 over Rio De Casa carry?

About 189 vehicles per day (2023 count).

How long is 33-B028 over Rio De Casa?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 24 ft wide.

Who owns 33-B028 over Rio De Casa?

It is owned by the County Highway Agency.