US Bridges

Road 80021 over Big Cottonwood Creek

Good

Salt Lake County, Utah · 7 MI UP Big Cottonwood Cy · Structure no. 041901000001037

Built
1996
29 years old
Condition
Good
inspected October 2020
Type
Slab
Wood or Timber
Length
26 ft
1 main span
Daily traffic
150
1993 count
Owner
Federal
U.S. Forest Service

About this bridge

Road 80021 over Big Cottonwood Creek is a wood or timber slab carrying Road 80021 over Big Cottonwood Creek in Salt Lake County, Utah. It was built in 1996, so it is 29 years old, younger than the Utah average of 40.1 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 150 vehicles a day, roughly 3% of them trucks, projected to reach 225 by 2045. The structure is 26 ft (7.9 m) long and 24 ft wide.

CarriesRoad 80021
CrossesBig Cottonwood Creek
Location7 MI UP Big Cottonwood Cy
RouteFederal Lands Road 80021
StateUtah
Coordinates40.64267, -111.63719
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45.3 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadUnknown
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width24 ft (7.3 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (1993)
Projected traffic225 by 2045
Trucks3%
Lanes on structure2
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Road 80021 over Big Cottonwood Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Road 80021 over Big Cottonwood Creek 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 2020.

How much traffic does Road 80021 over Big Cottonwood Creek carry?

About 150 vehicles per day (1993 count), of which roughly 3% are trucks.

How long is Road 80021 over Big Cottonwood Creek?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.

Who owns Road 80021 over Big Cottonwood Creek?

It is owned by the U.S. Forest Service.