US Bridges

I 17 & Nb-Sb FR over Acdc

Fair

Maricopa County, Arizona · 6.55 MI N of US 60 · Structure no. 01440

Built
1988
37 years old
Condition
Fair
inspected July 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
122 ft
1 main span
Daily traffic
183,216
2021 count
Owner
State
State Highway Agency

About this bridge

I 17 & Nb-Sb FR over Acdc is a prestressed concrete box beam or girders - single or spread carrying I 17 & Nb-Sb FR over Acdc in Maricopa County, Arizona. It was built in 1988, so it is 37 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 183,216 vehicles a day, roughly 8% of them trucks, projected to reach 183,226 by 2041. The structure is 122 ft (37.2 m) long and 258 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesI 17 & Nb-Sb FR
CrossesAcdc
Location6.55 MI N of US 60
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.5714, -112.1172
Functional classUrban Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating48 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length122 ft (37.2 m)
Longest span118 ft (36 m)
Deck width258 ft (78.7 m)
Roadway width238 ft (72.6 m)
Vertical clearance over deck38 ft (11.6 m)

Traffic and service

Average daily traffic183,216 (2021)
Projected traffic183,226 by 2041
Trucks8%
Lanes on structure12
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 I 17 & Nb-Sb FR over Acdc built?

It was built in 1988, making it 37 years old in 2025.

What condition is I 17 & Nb-Sb FR over Acdc 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 July 2024.

How much traffic does I 17 & Nb-Sb FR over Acdc carry?

About 183,216 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I 17 & Nb-Sb FR over Acdc?

The structure is 122 ft (37.2 m) long with a longest span of 118 ft (36 m) and a deck 258 ft wide.

Who owns I 17 & Nb-Sb FR over Acdc?

It is owned by the State Highway Agency.