US Bridges

Transwestern Road over I 40; EB

Good

Coconino County, Arizona · 10.4 MI W of JCT I 17 · Structure no. 00783

Built
1963
62 years old, rebuilt 2020
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
3 main spans
Daily traffic
7,526
2022 count
Owner
State
State Highway Agency

About this bridge

Transwestern Road over I 40; EB is a steel continuous stringer/multi-beam or girder carrying Transwestern Road over I 40; EB in Coconino County, Arizona. It was built in 1963 and reconstructed in 2020, so it is 62 years old, older 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 7,526 vehicles a day, roughly 12% of them trucks, projected to reach 7,536 by 2042. The structure is 155 ft (47.2 m) long and 39 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesTranswestern Road
CrossesI 40; EB
Location10.4 MI W of JCT I 17
RouteCounty Highway 0
CountyCoconino County
StateArizona
Coordinates35.236, -111.8233
Functional classRural Minor 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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than 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 rating59 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length155 ft (47.2 m)
Longest span54 ft (16.5 m)
Deck width39 ft (11.9 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,526 (2022)
Projected traffic7,536 by 2042
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 Transwestern Road over I 40; EB built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 2020.

What condition is Transwestern Road over I 40; EB 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 August 2024.

How much traffic does Transwestern Road over I 40; EB carry?

About 7,526 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is Transwestern Road over I 40; EB?

The structure is 155 ft (47.2 m) long with a longest span of 54 ft (16.5 m) and a deck 39 ft wide.

Who owns Transwestern Road over I 40; EB?

It is owned by the State Highway Agency.