US Bridges

US-70 Wbl over Alameda Arroyo

Fair

Dona Ana County, New Mexico · 1.6 M E NM-185/LAS Cruces · Structure no. 000000000005724

Built
1957
68 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
203 ft
6 main spans
Daily traffic
22,039
2023 count
Owner
State
State Highway Agency

About this bridge

US-70 Wbl over Alameda Arroyo is a concrete continuous slab carrying US-70 Wbl over Alameda Arroyo in Dona Ana County, New Mexico. It was built in 1957, so it is 68 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 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 22,039 vehicles a day, roughly 12% of them trucks, projected to reach 29,973 by 2043. The structure is 203 ft (61.8 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesUS-70 Wbl
CrossesAlameda Arroyo
Location1.6 M E NM-185/LAS Cruces
RouteU.S. Route 70
CountyDona Ana County
StateNew Mexico
Coordinates32.33753, -106.77826
Functional classUrban Other Principal Arterial

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.7 US tons
Inventory rating36.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length203 ft (61.8 m)
Longest span33 ft (10.2 m)
Deck width32 ft (9.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic22,039 (2023)
Projected traffic29,973 by 2043
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$474,000
NavigationNo navigation control on waterway

Frequently asked questions

When was US-70 Wbl over Alameda Arroyo built?

It was built in 1957, making it 68 years old in 2025.

What condition is US-70 Wbl over Alameda Arroyo 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 August 2023.

How much traffic does US-70 Wbl over Alameda Arroyo carry?

About 22,039 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US-70 Wbl over Alameda Arroyo?

The structure is 203 ft (61.8 m) long with a longest span of 33 ft (10.2 m) and a deck 32 ft wide.

Who owns US-70 Wbl over Alameda Arroyo?

It is owned by the State Highway Agency.