US Bridges

Twin Arrows Road over I-40

Fair

Coconino County, Arizona · 24.1 MI E JCT I-17 · Structure no. 01363

Built
1969
56 years old, rebuilt 2020
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
236 ft
2 main spans
Daily traffic
1,947
2022 count
Owner
State
State Highway Agency

About this bridge

Twin Arrows Road over I-40 is a steel continuous stringer/multi-beam or girder carrying Twin Arrows Road over I-40 in Coconino County, Arizona. It was built in 1969 and reconstructed in 2020, so it is 56 years old, older 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 1,947 vehicles a day, projected to reach 1,957 by 2042. The structure is 236 ft (71.9 m) long and 31 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesTwin Arrows Road
CrossesI-40
Location24.1 MI E JCT I-17
RouteCounty Highway 0
CountyCoconino County
StateArizona
Coordinates35.1611, -111.2721
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length236 ft (71.9 m)
Longest span116 ft (35.4 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,947 (2022)
Projected traffic1,957 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed11.8 mi (19 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 Twin Arrows Road over I-40 built?

It was built in 1969, making it 56 years old in 2025. It was reconstructed in 2020.

What condition is Twin Arrows Road over I-40 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 September 2024.

How much traffic does Twin Arrows Road over I-40 carry?

About 1,947 vehicles per day (2022 count).

How long is Twin Arrows Road over I-40?

The structure is 236 ft (71.9 m) long with a longest span of 116 ft (35.4 m) and a deck 31 ft wide.

Who owns Twin Arrows Road over I-40?

It is owned by the State Highway Agency.