US Bridges

FR Cnty RD 20 over Popo Agie River

Good

Fremont County, Wyoming · Mortimore Lane · Structure no. MMT

Built
2012
13 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
93 ft
1 main span
Daily traffic
427
2024 count
Owner
County
County Highway Agency

About this bridge

FR Cnty RD 20 over Popo Agie River is a steel stringer/multi-beam or girder carrying FR Cnty RD 20 over Popo Agie River in Fremont County, Wyoming. It was built in 2012, so it is 13 years old, younger than the Wyoming average of 48.4 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 427 vehicles a day, roughly 2% of them trucks, projected to reach 598 by 2043. The structure is 93 ft (28.2 m) long and 42 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesFR Cnty RD 20
CrossesPopo Agie River
LocationMortimore Lane
RouteCounty Highway 20
StateWyoming
Coordinates42.80987, -108.74584
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78.4 US tons
Inventory rating46.6 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length93 ft (28.2 m)
Longest span90 ft (27.4 m)
Deck width42 ft (12.7 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic427 (2024)
Projected traffic598 by 2043
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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 FR Cnty RD 20 over Popo Agie River built?

It was built in 2012, making it 13 years old in 2025.

What condition is FR Cnty RD 20 over Popo Agie River 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 March 2023.

How much traffic does FR Cnty RD 20 over Popo Agie River carry?

About 427 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is FR Cnty RD 20 over Popo Agie River?

The structure is 93 ft (28.2 m) long with a longest span of 90 ft (27.4 m) and a deck 42 ft wide.

Who owns FR Cnty RD 20 over Popo Agie River?

It is owned by the County Highway Agency.