US Bridges

40B over Old SR 66

Good

Yavapai County, Arizona · 0.7 MI N JCT I-40 · Structure no. 01799

Built
1978
47 years old, rebuilt 2019
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
176 ft
3 main spans
Daily traffic
1,654
2022 count
Owner
State
State Highway Agency

About this bridge

40B over Old SR 66 is a prestressed concrete stringer/multi-beam or girder carrying 40B over Old SR 66 in Yavapai County, Arizona. It was built in 1978 and reconstructed in 2019, so it is 47 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 1,654 vehicles a day, roughly 7% of them trucks, projected to reach 1,664 by 2042. The structure is 176 ft (53.6 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries40B
CrossesOld SR 66
Location0.7 MI N JCT I-40
RouteState Highway 40
CountyYavapai County
StateArizona
Coordinates35.3294, -112.8903
Functional classRural Major Collector

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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71 US tons
Inventory rating55 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length176 ft (53.6 m)
Longest span87 ft (26.5 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,654 (2022)
Projected traffic1,664 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 40B over Old SR 66 built?

It was built in 1978, making it 47 years old in 2025. It was reconstructed in 2019.

What condition is 40B over Old SR 66 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 June 2024.

How much traffic does 40B over Old SR 66 carry?

About 1,654 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is 40B over Old SR 66?

The structure is 176 ft (53.6 m) long with a longest span of 87 ft (26.5 m) and a deck 47 ft wide.

Who owns 40B over Old SR 66?

It is owned by the State Highway Agency.