US Bridges

33-B028 over Rio LA Casa

Fair

Mora County, New Mexico · 2.8 M SW NM-518/CLEVELAND · Structure no. 000000000008519

Built
1983
42 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
28 ft
1 main span
Daily traffic
189
2023 count
Owner
County
County Highway Agency

About this bridge

33-B028 over Rio LA Casa is a prestressed concrete tee beam carrying 33-B028 over Rio LA Casa in Mora 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 189 vehicles a day, projected to reach 257 by 2043. The structure is 28 ft (8.5 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Carries33-B028
CrossesRio LA Casa
Location2.8 M SW NM-518/CLEVELAND
RouteCounty Highway 33028
Coordinates35.97544, -105.40475
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.
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 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 length28 ft (8.5 m)
Longest span26 ft (7.9 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.3 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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 33-B028 over Rio LA Casa built?

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

What condition is 33-B028 over Rio LA 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 LA Casa carry?

About 189 vehicles per day (2023 count).

How long is 33-B028 over Rio LA Casa?

The structure is 28 ft (8.5 m) long with a longest span of 26 ft (7.9 m) and a deck 24 ft wide.

Who owns 33-B028 over Rio LA Casa?

It is owned by the County Highway Agency.