US Bridges

I 17 NB over I 10 & SB 17-WB 10

Fair

Maricopa County, Arizona · At SE JCT With I 17 · Structure no. 01997

Built
1987
38 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
752 ft
5 main spans
Daily traffic
76,449
2021 count
Owner
State
State Highway Agency

About this bridge

I 17 NB over I 10 & SB 17-WB 10 is a prestressed concrete continuous box beam or girders - single or spread carrying I 17 NB over I 10 & SB 17-WB 10 in Maricopa County, Arizona. It was built in 1987, so it is 38 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 76,449 vehicles a day, roughly 11% of them trucks, projected to reach 76,459 by 2041. The structure is 752 ft (229.2 m) long and 61 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesI 17 NB
CrossesI 10 & SB 17-WB 10
LocationAt SE JCT With I 17
RouteInterstate 17
StateArizona
Coordinates33.4279, -112.0352
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating51 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length752 ft (229.2 m)
Longest span185 ft (56.4 m)
Deck width61 ft (18.6 m)
Roadway width58 ft (17.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic76,449 (2021)
Projected traffic76,459 by 2041
Trucks11%
Lanes on structure3
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed5 mi (8 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I 17 NB over I 10 & SB 17-WB 10 built?

It was built in 1987, making it 38 years old in 2025.

What condition is I 17 NB over I 10 & SB 17-WB 10 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 2024.

How much traffic does I 17 NB over I 10 & SB 17-WB 10 carry?

About 76,449 vehicles per day (2021 count), of which roughly 11% are trucks.

How long is I 17 NB over I 10 & SB 17-WB 10?

The structure is 752 ft (229.2 m) long with a longest span of 185 ft (56.4 m) and a deck 61 ft wide.

Who owns I 17 NB over I 10 & SB 17-WB 10?

It is owned by the State Highway Agency.