US Bridges

27-Z004 over Rio Ruidoso

Fair

Lincoln County, New Mexico · .1 Miles NW of Main Road · Structure no. 000000000009188

Built
1979
46 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
29 ft
1 main span
Daily traffic
345
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

27-Z004 over Rio Ruidoso is a wood or timber stringer/multi-beam or girder carrying 27-Z004 over Rio Ruidoso in Lincoln County, New Mexico. It was built in 1979, so it is 46 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 345 vehicles a day, projected to reach 469 by 2043. The structure is 29 ft (8.8 m) long and 14 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
Carries27-Z004
CrossesRio Ruidoso
Location.1 Miles NW of Main Road
RouteCounty Highway 27004
CountyLincoln County
StateNew Mexico
Coordinates33.33723, -105.72093
Functional classUrban 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.2 US tons
Inventory rating21.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 15
Structure length29 ft (8.8 m)
Longest span27 ft (8.2 m)
Deck width14 ft (4.3 m)
Roadway width13 ft (4.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic345 (2023)
Projected traffic469 by 2043
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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$28,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 27-Z004 over Rio Ruidoso built?

It was built in 1979, making it 46 years old in 2025.

What condition is 27-Z004 over Rio Ruidoso 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 2023.

How much traffic does 27-Z004 over Rio Ruidoso carry?

About 345 vehicles per day (2023 count).

How long is 27-Z004 over Rio Ruidoso?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.2 m) and a deck 14 ft wide.

Who owns 27-Z004 over Rio Ruidoso?

It is owned by the City or Municipal Highway Agency.