US Bridges

SR101L over Miller RD

Good

Maricopa County, Arizona · Miller Road & SR101 · Structure no. 20179

Built
2020
5 years old
Condition
Good
inspected November 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
92 ft
1 main span
Daily traffic
1,010
2023 count
Owner
State
State Highway Agency

About this bridge

SR101L over Miller RD is a prestressed concrete stringer/multi-beam or girder carrying SR101L over Miller RD in Maricopa County, Arizona. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 1,010 vehicles a day, roughly 5% of them trucks, projected to reach 1,020 by 2042. The structure is 92 ft (28 m) long and 41 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR101L
CrossesMiller RD
LocationMiller Road & SR101
RouteState Highway 101
CountyMaricopa County
StateArizona
Coordinates33.6566, -111.9156
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating95 US tons
Inventory rating41 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length92 ft (28 m)
Longest span90 ft (27.4 m)
Deck width41 ft (12.4 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,010 (2023)
Projected traffic1,020 by 2042
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
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 SR101L over Miller RD built?

It was built in 2020, making it 5 years old in 2025.

What condition is SR101L over Miller RD 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 November 2023.

How much traffic does SR101L over Miller RD carry?

About 1,010 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR101L over Miller RD?

The structure is 92 ft (28 m) long with a longest span of 90 ft (27.4 m) and a deck 41 ft wide.

Who owns SR101L over Miller RD?

It is owned by the State Highway Agency.