US Bridges

Sixth ST over Granite Creek

Fair

Yavapai County, Arizona · 1 Block S of Navajo DR · Structure no. 09788

Built
1922
103 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete Continuous
Length
62 ft
5 main spans
Daily traffic
7,043
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Sixth ST over Granite Creek is a concrete continuous culvert carrying Sixth ST over Granite Creek in Yavapai County, Arizona. It was built in 1922, so it is 103 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 7,043 vehicles a day, roughly 10% of them trucks, projected to reach 7,053 by 2042. The structure is 62 ft (18.9 m) long and 63 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSixth ST
CrossesGranite Creek
Location1 Block S of Navajo DR
RouteCity Street 0
CountyYavapai County
StateArizona
Coordinates34.5507, -112.4658
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length62 ft (18.9 m)
Longest span10 ft (3 m)
Deck width63 ft (19.2 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,043 (2022)
Projected traffic7,053 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sixth ST over Granite Creek built?

It was built in 1922, making it 103 years old in 2025.

What condition is Sixth ST over Granite 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 August 2023.

How much traffic does Sixth ST over Granite Creek carry?

About 7,043 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sixth ST over Granite Creek?

The structure is 62 ft (18.9 m) long with a longest span of 10 ft (3 m) and a deck 63 ft wide.

Who owns Sixth ST over Granite Creek?

It is owned by the City or Municipal Highway Agency.