US Bridges

County Road Gs over Kannah Creek

Fair

Mesa County, Colorado · .7 MI SE Purdy Mesa RD · Structure no. MESA-GS-38.99

Built
1975
50 years old, rebuilt 2011
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
27 ft
1 main span
Daily traffic
141
2022 count
Owner
County
County Highway Agency

About this bridge

County Road Gs over Kannah Creek is a steel stringer/multi-beam or girder carrying County Road Gs over Kannah Creek in Mesa County, Colorado. It was built in 1975 and reconstructed in 2011, so it is 50 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 141 vehicles a day, roughly 2% of them trucks, projected to reach 165 by 2042. The structure is 27 ft (8.1 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesCounty Road Gs
CrossesKannah Creek
Location.7 MI SE Purdy Mesa RD
RouteCounty Highway 0
Coordinates38.93058, -108.33158
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating69.2 US tons
Inventory rating41.4 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span24 ft (7.4 m)
Deck width24 ft (7.4 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141 (2022)
Projected traffic165 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 County Road Gs over Kannah Creek built?

It was built in 1975, making it 50 years old in 2025. It was reconstructed in 2011.

What condition is County Road Gs over Kannah Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in February 2024.

How much traffic does County Road Gs over Kannah Creek carry?

About 141 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is County Road Gs over Kannah Creek?

The structure is 27 ft (8.1 m) long with a longest span of 24 ft (7.4 m) and a deck 24 ft wide.

Who owns County Road Gs over Kannah Creek?

It is owned by the County Highway Agency.