US Bridges

US-70 Wbl over Porter Drive

Fair

Dona Ana County, New Mexico · 5.2 M E of Exit 6 of I-25 · Structure no. 000000000009213

Built
2003
22 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
120 ft
1 main span
Daily traffic
28,186
2023 count
Owner
State
State Highway Agency

About this bridge

US-70 Wbl over Porter Drive is a prestressed concrete box beam or girders - single or spread carrying US-70 Wbl over Porter Drive in Dona Ana County, New Mexico. It was built in 2003, so it is 22 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 6 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 28,186 vehicles a day, roughly 12% of them trucks, projected to reach 38,332 by 2043. The structure is 120 ft (36.5 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesUS-70 Wbl
CrossesPorter Drive
Location5.2 M E of Exit 6 of I-25
RouteU.S. Route 70
CountyDona Ana County
StateNew Mexico
Coordinates32.39032, -106.70022
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating38 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length120 ft (36.5 m)
Longest span117 ft (35.8 m)
Deck width40 ft (12.3 m)
Roadway width36 ft (10.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic28,186 (2023)
Projected traffic38,332 by 2043
Trucks12%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-70 Wbl over Porter Drive built?

It was built in 2003, making it 22 years old in 2025.

What condition is US-70 Wbl over Porter Drive 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 2024.

How much traffic does US-70 Wbl over Porter Drive carry?

About 28,186 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US-70 Wbl over Porter Drive?

The structure is 120 ft (36.5 m) long with a longest span of 117 ft (35.8 m) and a deck 40 ft wide.

Who owns US-70 Wbl over Porter Drive?

It is owned by the State Highway Agency.