US Bridges

13-Z018 over Unnamed Waterway

Fair

Dona Ana County, New Mexico · 0.3 M E JCT NM154/NM140 · Structure no. 000000000007715

Built
1970
55 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
57 ft
2 main spans
Daily traffic
337
2023 count
Owner
County
County Highway Agency

About this bridge

13-Z018 over Unnamed Waterway is a steel continuous stringer/multi-beam or girder carrying 13-Z018 over Unnamed Waterway in Dona Ana County, New Mexico. It was built in 1970, so it is 55 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 6 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 337 vehicles a day, projected to reach 458 by 2043. The structure is 57 ft (17.3 m) long and 20 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

Location

Open in Google Maps
Carries13-Z018
CrossesUnnamed Waterway
Location0.3 M E JCT NM154/NM140
RouteCounty Highway 13018
CountyDona Ana County
StateNew Mexico
Coordinates32.66719, -107.07255
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.2 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckWood or timber
Main spans2
Design loadUnknown
Structure length57 ft (17.3 m)
Longest span28 ft (8.4 m)
Deck width20 ft (6.2 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic337 (2023)
Projected traffic458 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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$69,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 13-Z018 over Unnamed Waterway built?

It was built in 1970, making it 55 years old in 2025.

What condition is 13-Z018 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 March 2023.

How much traffic does 13-Z018 over Unnamed Waterway carry?

About 337 vehicles per day (2023 count).

How long is 13-Z018 over Unnamed Waterway?

The structure is 57 ft (17.3 m) long with a longest span of 28 ft (8.4 m) and a deck 20 ft wide.

Who owns 13-Z018 over Unnamed Waterway?

It is owned by the County Highway Agency.