US Bridges

Adams ST over I 17 NB SB

Good

Maricopa County, Arizona · 5.7 MI N JCT I 10 · Structure no. 01949

Built
1986
39 years old
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
182 ft
2 main spans
Daily traffic
6,073
2021 count
Owner
State
State Highway Agency

About this bridge

Adams ST over I 17 NB SB is a prestressed concrete box beam or girders - multiple carrying Adams ST over I 17 NB SB in Maricopa County, Arizona. It was built in 1986, so it is 39 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 6,073 vehicles a day, roughly 5% of them trucks, projected to reach 6,083 by 2041. The structure is 182 ft (55.5 m) long and 69 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesAdams ST
CrossesI 17 NB SB
Location5.7 MI N JCT I 10
RouteCity Street 0
StateArizona
Coordinates33.4492, -112.1085
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length182 ft (55.5 m)
Longest span96 ft (29.3 m)
Deck width69 ft (21 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,073 (2021)
Projected traffic6,083 by 2041
Trucks5%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Adams ST over I 17 NB SB built?

It was built in 1986, making it 39 years old in 2025.

What condition is Adams ST over I 17 NB SB in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2024.

How much traffic does Adams ST over I 17 NB SB carry?

About 6,073 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Adams ST over I 17 NB SB?

The structure is 182 ft (55.5 m) long with a longest span of 96 ft (29.3 m) and a deck 69 ft wide.

Who owns Adams ST over I 17 NB SB?

It is owned by the State Highway Agency.