US Bridges

Paper Mill Road over Cottonwood Wash

Good

Navajo County, Arizona · 2.2 MI W JCT SR 77 · Structure no. 09716

Built
1982
43 years old
Condition
Good
inspected May 2024
Type
Slab
Concrete Continuous
Length
375 ft
11 main spans
Daily traffic
820
2022 count
Owner
County
County Highway Agency

About this bridge

Paper Mill Road over Cottonwood Wash is a concrete continuous slab carrying Paper Mill Road over Cottonwood Wash in Navajo County, Arizona. It was built in 1982, so it is 43 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 820 vehicles a day, roughly 5% of them trucks, projected to reach 830 by 2042. The structure is 375 ft (114.3 m) long and 33 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesPaper Mill Road
CrossesCottonwood Wash
Location2.2 MI W JCT SR 77
RouteCounty Highway 0
CountyNavajo County
StateArizona
Coordinates34.46959, -110.12858
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating63.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length375 ft (114.3 m)
Longest span35 ft (10.7 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic820 (2022)
Projected traffic830 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Paper Mill Road over Cottonwood Wash built?

It was built in 1982, making it 43 years old in 2025.

What condition is Paper Mill Road over Cottonwood 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 May 2024.

How much traffic does Paper Mill Road over Cottonwood Wash carry?

About 820 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Paper Mill Road over Cottonwood Wash?

The structure is 375 ft (114.3 m) long with a longest span of 35 ft (10.7 m) and a deck 33 ft wide.

Who owns Paper Mill Road over Cottonwood Wash?

It is owned by the County Highway Agency.