US Bridges

West Frontage Road over Tempe Drainage Ditch #2

Fair

Maricopa County, Arizona · 0.4 MI North JCT I 10 · Structure no. 01802

Built
1978
47 years old
Condition
Fair
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
41 ft
1 main span
Daily traffic
1,500
2023 count
Owner
State
State Highway Agency

About this bridge

West Frontage Road over Tempe Drainage Ditch #2 is a prestressed concrete box beam or girders - multiple carrying West Frontage Road over Tempe Drainage Ditch #2 in Maricopa County, Arizona. It was built in 1978, so it is 47 years old, younger than the Arizona average of 47.8 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 1,500 vehicles a day, roughly 2% of them trucks, projected to reach 1,510 by 2042. The structure is 41 ft (12.5 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesWest Frontage Road
CrossesTempe Drainage Ditch #2
Location0.4 MI North JCT I 10
RouteState Highway 143
CountyMaricopa County
StateArizona
Coordinates33.41672, -111.97865
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating54 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length41 ft (12.5 m)
Longest span38 ft (11.6 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deck35 ft (10.7 m)

Traffic and service

Average daily traffic1,500 (2023)
Projected traffic1,510 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

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 West Frontage Road over Tempe Drainage Ditch #2 built?

It was built in 1978, making it 47 years old in 2025.

What condition is West Frontage Road over Tempe Drainage Ditch #2 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 June 2023.

How much traffic does West Frontage Road over Tempe Drainage Ditch #2 carry?

About 1,500 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is West Frontage Road over Tempe Drainage Ditch #2?

The structure is 41 ft (12.5 m) long with a longest span of 38 ft (11.6 m) and a deck 29 ft wide.

Who owns West Frontage Road over Tempe Drainage Ditch #2?

It is owned by the State Highway Agency.