US Bridges

County Road 122 over South Turkey Creek

Fair

Jefferson County, Colorado · 3 MI S of Tinytown · Structure no. E-15-91

Built
1991
34 years old
Condition
Fair
inspected March 2025
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
1,020
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 122 over South Turkey Creek is a concrete frame carrying County Road 122 over South Turkey Creek in Jefferson County, Colorado. It was built in 1991, so it is 34 years old, younger 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 5 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 1,020 vehicles a day, roughly 4% of them trucks, projected to reach 1,173 by 2040. The structure is 25 ft (7.7 m) long and 36 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesCounty Road 122
CrossesSouth Turkey Creek
Location3 MI S of Tinytown
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.5635, -105.22031
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40 US tons
Inventory rating23.9 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckOther
Main spans1
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span23 ft (7.1 m)
Deck width36 ft (10.9 m)
Roadway width33 ft (10 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,020 (2020)
Projected traffic1,173 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
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 County Road 122 over South Turkey Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is County Road 122 over South Turkey 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 March 2025.

How much traffic does County Road 122 over South Turkey Creek carry?

About 1,020 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is County Road 122 over South Turkey Creek?

The structure is 25 ft (7.7 m) long with a longest span of 23 ft (7.1 m) and a deck 36 ft wide.

Who owns County Road 122 over South Turkey Creek?

It is owned by the County Highway Agency.