US Bridges

Iron Springs Road over Unnamed Wash

Fair

Yavapai County, Arizona · 4.3 MI NW JCT SR 89 · Structure no. 09114

Built
1937
88 years old, rebuilt 1977
Condition
Fair
inspected September 2023
Type
Slab
Concrete
Length
33 ft
2 main spans
Daily traffic
5,425
2021 count
Owner
County
County Highway Agency

About this bridge

Iron Springs Road over Unnamed Wash is a concrete slab carrying Iron Springs Road over Unnamed Wash in Yavapai County, Arizona. It was built in 1937 and reconstructed in 1977, so it is 88 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 5,425 vehicles a day, roughly 5% of them trucks, projected to reach 5,435 by 2041. The structure is 33 ft (10.1 m) long and 36 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

Open in Google Maps
CarriesIron Springs Road
CrossesUnnamed Wash
Location4.3 MI NW JCT SR 89
RouteCounty Highway 0
CountyYavapai County
StateArizona
Coordinates34.5749, -112.5149
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating80 US tons
Inventory rating48 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span16 ft (4.9 m)
Deck width36 ft (10.9 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,425 (2021)
Projected traffic5,435 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed60.3 mi (97 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 Unnamed Wash built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1977.

What condition is Iron Springs Road over Unnamed Wash 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 2023.

How much traffic does Iron Springs Road over Unnamed Wash carry?

About 5,425 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Iron Springs Road over Unnamed Wash?

The structure is 33 ft (10.1 m) long with a longest span of 16 ft (4.9 m) and a deck 36 ft wide.

Who owns Iron Springs Road over Unnamed Wash?

It is owned by the County Highway Agency.