US Bridges

US-70 over Rio Bonito

Good

Lincoln County, New Mexico · 0.1 M W of US-70/380 Hond · Structure no. 000000000009313

Built
2005
20 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
244 ft
2 main spans
Daily traffic
3,728
2023 count
Owner
State
State Highway Agency

About this bridge

US-70 over Rio Bonito is a prestressed concrete continuous stringer/multi-beam or girder carrying US-70 over Rio Bonito in Lincoln County, New Mexico. It was built in 2005, so it is 20 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,728 vehicles a day, roughly 17% of them trucks, projected to reach 5,070 by 2043. The structure is 244 ft (74.4 m) long and 97 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

CarriesUS-70
CrossesRio Bonito
Location0.1 M W of US-70/380 Hond
RouteU.S. Route 70
Coordinates33.39001, -105.27574
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating89 US tons
Inventory rating49.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length244 ft (74.4 m)
Longest span110 ft (33.5 m)
Deck width97 ft (29.6 m)
Roadway width95 ft (29 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,728 (2023)
Projected traffic5,070 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-70 over Rio Bonito built?

It was built in 2005, making it 20 years old in 2025.

What condition is US-70 over Rio Bonito in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2023.

How much traffic does US-70 over Rio Bonito carry?

About 3,728 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-70 over Rio Bonito?

The structure is 244 ft (74.4 m) long with a longest span of 110 ft (33.5 m) and a deck 97 ft wide.

Who owns US-70 over Rio Bonito?

It is owned by the State Highway Agency.