US Bridges

Cb Cnty RD 320 over Sand Creek

Good

Carbon County, Wyoming · 13 Mi. NE of Elk Mountain · Structure no. FCF

Built
1985
40 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
11
2024 count
Owner
County
County Highway Agency

About this bridge

Cb Cnty RD 320 over Sand Creek is a steel stringer/multi-beam or girder carrying Cb Cnty RD 320 over Sand Creek in Carbon County, Wyoming. It was built in 1985, so it is 40 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 11 vehicles a day, projected to reach 15 by 2043. The structure is 44 ft (13.4 m) long and 25 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

CarriesCb Cnty RD 320
CrossesSand Creek
Location13 Mi. NE of Elk Mountain
RouteCounty Highway 320
StateWyoming
Coordinates41.78831, -106.27617
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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.7 US tons
Inventory rating36 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length44 ft (13.4 m)
Longest span41 ft (12.4 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11 (2024)
Projected traffic15 by 2043
Trucks0%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$44,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cb Cnty RD 320 over Sand Creek built?

It was built in 1985, making it 40 years old in 2025.

What condition is Cb Cnty RD 320 over Sand 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 June 2024.

How much traffic does Cb Cnty RD 320 over Sand Creek carry?

About 11 vehicles per day (2024 count).

How long is Cb Cnty RD 320 over Sand Creek?

The structure is 44 ft (13.4 m) long with a longest span of 41 ft (12.4 m) and a deck 25 ft wide.

Who owns Cb Cnty RD 320 over Sand Creek?

It is owned by the County Highway Agency.