US Bridges

County Road 64 | N over North Turkey Creek

Fair

Jefferson County, Colorado · 1.6 MI W of US285 · Structure no. D-16-86

Built
1973
52 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
30 ft
2 main spans
Daily traffic
1,507
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 64 | N over North Turkey Creek is a concrete culvert carrying County Road 64 | N over North Turkey Creek in Jefferson County, Colorado. It was built in 1973, so it is 52 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 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 1,507 vehicles a day, roughly 4% of them trucks, projected to reach 1,733 by 2040. The structure is 30 ft (9 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 64 | N
CrossesNorth Turkey Creek
Location1.6 MI W of US285
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.58816, -105.24895
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.7 US tons
Inventory rating42.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHL 93
Structure length30 ft (9 m)
Longest span14 ft (4.3 m)
Deck width58 ft (17.7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,507 (2020)
Projected traffic1,733 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 64 | N over North Turkey Creek built?

It was built in 1973, making it 52 years old in 2025.

What condition is County Road 64 | N over North 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 April 2023.

How much traffic does County Road 64 | N over North Turkey Creek carry?

About 1,507 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is County Road 64 | N over North Turkey Creek?

The structure is 30 ft (9 m) long with a longest span of 14 ft (4.3 m) and a deck 58 ft wide.

Who owns County Road 64 | N over North Turkey Creek?

It is owned by the County Highway Agency.