US Bridges

SR 8 B over Union Pacific Railroad

Good

Maricopa County, Arizona · 0.1 MI SE JCT SR 85 · Structure no. 02966

Built
2012
13 years old
Condition
Good
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
334 ft
3 main spans
Daily traffic
7,296
2021 count
Owner
State
State Highway Agency

About this bridge

SR 8 B over Union Pacific Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 8 B over Union Pacific Railroad in Maricopa County, Arizona. It was built in 2012, so it is 13 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 7,296 vehicles a day, roughly 48% of them trucks, projected to reach 7,306 by 2041. The structure is 334 ft (101.8 m) long and 74 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesSR 8 B
CrossesUnion Pacific Railroad
Location0.1 MI SE JCT SR 85
RouteState Highway 8
CountyMaricopa County
StateArizona
Coordinates32.9499, -112.6968
Functional classRural Principal Arterial - Other

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
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 rating38 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length334 ft (101.8 m)
Longest span110 ft (33.5 m)
Deck width74 ft (22.7 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,296 (2021)
Projected traffic7,306 by 2041
Trucks48%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesRailroad
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

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 SR 8 B over Union Pacific Railroad built?

It was built in 2012, making it 13 years old in 2025.

What condition is SR 8 B over Union Pacific Railroad 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 April 2023.

How much traffic does SR 8 B over Union Pacific Railroad carry?

About 7,296 vehicles per day (2021 count), of which roughly 48% are trucks.

How long is SR 8 B over Union Pacific Railroad?

The structure is 334 ft (101.8 m) long with a longest span of 110 ft (33.5 m) and a deck 74 ft wide.

Who owns SR 8 B over Union Pacific Railroad?

It is owned by the State Highway Agency.