US Bridges

Iron Springs Road over Willow Creek

Fair

Yavapai County, Arizona · 4.5 MI NW JCT SR 89 · Structure no. 09108

Built
1935
90 years old, rebuilt 1976
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
60 ft
2 main spans
Daily traffic
5,920
2022 count
Owner
County
County Highway Agency

About this bridge

Iron Springs Road over Willow Creek is a steel stringer/multi-beam or girder carrying Iron Springs Road over Willow Creek in Yavapai County, Arizona. It was built in 1935 and reconstructed in 1976, so it is 90 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 5 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 5,920 vehicles a day, roughly 5% of them trucks, projected to reach 5,930 by 2042. The structure is 60 ft (18.3 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIron Springs Road
CrossesWillow Creek
Location4.5 MI NW JCT SR 89
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.5766, -112.5173
Functional classUrban 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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating40 US tons
Inventory rating24 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span30 ft (9.1 m)
Deck width36 ft (11 m)
Roadway width35 ft (10.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,920 (2022)
Projected traffic5,930 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Iron Springs Road over Willow Creek built?

It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1976.

What condition is Iron Springs Road over Willow Creek 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 July 2023.

How much traffic does Iron Springs Road over Willow Creek carry?

About 5,920 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Iron Springs Road over Willow Creek?

The structure is 60 ft (18.3 m) long with a longest span of 30 ft (9.1 m) and a deck 36 ft wide.

Who owns Iron Springs Road over Willow Creek?

It is owned by the County Highway Agency.