US Bridges

SR 179 over Oak Creek/Ht Trail

Good

Coconino County, Arizona · 4.2 MI S of SR 89 a · Structure no. 02848

Built
2008
17 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
237 ft
3 main spans
Daily traffic
13,617
2022 count
Owner
State
State Highway Agency

About this bridge

SR 179 over Oak Creek/Ht Trail is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 179 over Oak Creek/Ht Trail in Coconino County, Arizona. It was built in 2008, so it is 17 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 13,617 vehicles a day, roughly 11% of them trucks, projected to reach 13,627 by 2042. The structure is 237 ft (72.2 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 179
CrossesOak Creek/Ht Trail
Location4.2 MI S of SR 89 a
RouteState Highway 179
CountyCoconino County
StateArizona
Coordinates34.81933, -111.77406
Functional classUrban Other Principal Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating79 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length237 ft (72.2 m)
Longest span78 ft (23.8 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,617 (2022)
Projected traffic13,627 by 2042
Trucks11%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 179 over Oak Creek/Ht Trail built?

It was built in 2008, making it 17 years old in 2025.

What condition is SR 179 over Oak Creek/Ht Trail 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 July 2023.

How much traffic does SR 179 over Oak Creek/Ht Trail carry?

About 13,617 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SR 179 over Oak Creek/Ht Trail?

The structure is 237 ft (72.2 m) long with a longest span of 78 ft (23.8 m) and a deck 31 ft wide.

Who owns SR 179 over Oak Creek/Ht Trail?

It is owned by the State Highway Agency.