US Bridges

39-Z083 over Rio Quemado

Poor

Rio Arriba County, New Mexico · 0.8 MI S Nm 76 @ MP 11.4 · Structure no. 000000000007861

Built
1975
50 years old
Condition
Poor
inspected May 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
28 ft
1 main span
Daily traffic
166
2023 count
Owner
County
County Highway Agency

About this bridge

39-Z083 over Rio Quemado is a wood or timber stringer/multi-beam or girder carrying 39-Z083 over Rio Quemado in Rio Arriba County, New Mexico. It was built in 1975, so it is 50 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 166 vehicles a day, projected to reach 225 by 2043. The structure is 28 ft (8.4 m) long and 16 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries39-Z083
CrossesRio Quemado
Location0.8 MI S Nm 76 @ MP 11.4
RouteCounty Highway 39083
CountyRio Arriba County
StateNew Mexico
Coordinates36.00528, -105.86292
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 6 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating39.2 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span28 ft (8.4 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic166 (2023)
Projected traffic225 by 2043
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$26,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 39-Z083 over Rio Quemado built?

It was built in 1975, making it 50 years old in 2025.

What condition is 39-Z083 over Rio Quemado in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2024.

How much traffic does 39-Z083 over Rio Quemado carry?

About 166 vehicles per day (2023 count).

How long is 39-Z083 over Rio Quemado?

The structure is 28 ft (8.4 m) long with a longest span of 28 ft (8.4 m) and a deck 16 ft wide.

Who owns 39-Z083 over Rio Quemado?

It is owned by the County Highway Agency.