US Bridges

Shiloh Street over Hidden Hills Wash

Good

Pima County, Arizona · 0.2 MI W JCT Harrison RD · Structure no. 10272

Built
1988
37 years old
Condition
Good
inspected October 2021
Type
Culvert
Concrete Continuous
Length
26 ft
3 main spans
Daily traffic
130
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Shiloh Street over Hidden Hills Wash is a concrete continuous culvert carrying Shiloh Street over Hidden Hills Wash in Pima County, Arizona. It was built in 1988, so it is 37 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 130 vehicles a day, projected to reach 140 by 2040. The structure is 26 ft (7.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesShiloh Street
CrossesHidden Hills Wash
Location0.2 MI W JCT Harrison RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.223, -110.7911
Functional classUrban Local

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 inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span8 ft (2.4 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic130 (2020)
Projected traffic140 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Shiloh Street over Hidden Hills Wash built?

It was built in 1988, making it 37 years old in 2025.

What condition is Shiloh Street over Hidden Hills 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 October 2021.

How much traffic does Shiloh Street over Hidden Hills Wash carry?

About 130 vehicles per day (2020 count).

How long is Shiloh Street over Hidden Hills Wash?

The structure is 26 ft (7.9 m) long with a longest span of 8 ft (2.4 m) and a deck 29 ft wide.

Who owns Shiloh Street over Hidden Hills Wash?

It is owned by the City or Municipal Highway Agency.