US Bridges

Ironwood Hill DR over Wash

Good

Pima County, Arizona · 0.4 MI W of Silverbell RD · Structure no. 09942

Built
1986
39 years old
Condition
Good
inspected August 2021
Type
Culvert
Concrete Continuous
Length
137 ft
9 main spans
Daily traffic
14,533
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Ironwood Hill DR over Wash is a concrete continuous culvert carrying Ironwood Hill DR over Wash in Pima County, Arizona. It was built in 1986, so it is 39 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 14,533 vehicles a day, roughly 10% of them trucks, projected to reach 14,543 by 2040. The structure is 137 ft (41.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesIronwood Hill DR
CrossesWash
Location0.4 MI W of Silverbell RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.2507, -111.0208
Functional classUrban Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating82 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans9
Design loadHS 20
Structure length137 ft (41.8 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,533 (2020)
Projected traffic14,543 by 2040
Trucks10%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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
NavigationNo navigation control on waterway

Frequently asked questions

When was Ironwood Hill DR over Wash built?

It was built in 1986, making it 39 years old in 2025.

What condition is Ironwood Hill DR over Wash 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 2021.

How much traffic does Ironwood Hill DR over Wash carry?

About 14,533 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Ironwood Hill DR over Wash?

The structure is 137 ft (41.8 m) long with a longest span of 14 ft (4.3 m).

Who owns Ironwood Hill DR over Wash?

It is owned by the City or Municipal Highway Agency.