US Bridges

55-0108 over Rio Grande River

PoorPosted for load

Taos County, New Mexico · 0.7 MI N JCT NM-68/NM-570 · Structure no. 000000000008656

Built
1965
60 years old
Condition
Poor
inspected October 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
205 ft
10 main spans
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

55-0108 over Rio Grande River is a wood or timber stringer/multi-beam or girder carrying 55-0108 over Rio Grande River in Taos County, New Mexico. It was built in 1965, so it is 60 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 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. Its operating status is: posted for load restriction.

It carries about 250 vehicles a day, projected to reach 340 by 2043. The structure is 205 ft (62.5 m) long and 12 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Carries55-0108
CrossesRio Grande River
Location0.7 MI N JCT NM-68/NM-570
RouteCounty Highway 55108
Coordinates36.27855, -105.78942
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load 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 adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating21.8 US tons
Inventory rating14 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans10
Design loadHS 20
Structure length205 ft (62.5 m)
Longest span22 ft (6.7 m)
Deck width12 ft (3.6 m)
Roadway width11 ft (3.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic340 by 2043
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$521,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 55-0108 over Rio Grande River built?

It was built in 1965, making it 60 years old in 2025.

What condition is 55-0108 over Rio Grande River 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 October 2023.

How much traffic does 55-0108 over Rio Grande River carry?

About 250 vehicles per day (2023 count).

How long is 55-0108 over Rio Grande River?

The structure is 205 ft (62.5 m) long with a longest span of 22 ft (6.7 m) and a deck 12 ft wide.

Who owns 55-0108 over Rio Grande River?

It is owned by the County Highway Agency.