US Bridges

16th ST over I 10

Fair

Maricopa County, Arizona · 3.7 MI E of JCT I 17 · Structure no. 01971

Built
1986
39 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
303 ft
2 main spans
Daily traffic
25,850
2021 count
Owner
State
State Highway Agency

About this bridge

16th ST over I 10 is a prestressed concrete continuous box beam or girders - single or spread carrying 16th ST over I 10 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 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 25,850 vehicles a day, roughly 5% of them trucks, projected to reach 25,860 by 2041. The structure is 303 ft (92.4 m) long and 105 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries16th ST
CrossesI 10
Location3.7 MI E of JCT I 17
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4617, -112.0477
Functional classUrban Minor Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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 rating99 US tons
Inventory rating79 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length303 ft (92.4 m)
Longest span165 ft (50.3 m)
Deck width105 ft (31.9 m)
Roadway width84 ft (25.6 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic25,850 (2021)
Projected traffic25,860 by 2041
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 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 16th ST over I 10 built?

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

What condition is 16th ST over I 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 December 2024.

How much traffic does 16th ST over I 10 carry?

About 25,850 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 16th ST over I 10?

The structure is 303 ft (92.4 m) long with a longest span of 165 ft (50.3 m) and a deck 105 ft wide.

Who owns 16th ST over I 10?

It is owned by the State Highway Agency.