US Bridges

County Road 64 over Private Drive

Fair

Jefferson County, Colorado · 3.2 Mi. W of US285 · Structure no. D-16-88

Built
1995
30 years old
Condition
Fair
inspected March 2025
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
1,586
2020 count
Owner
County
County Highway Agency

About this bridge

County Road 64 over Private Drive is a concrete culvert carrying County Road 64 over Private Drive in Jefferson County, Colorado. It was built in 1995, so it is 30 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 1,586 vehicles a day, roughly 4% of them trucks, projected to reach 1,824 by 2040. The structure is 25 ft (7.7 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCounty Road 64
CrossesPrivate Drive
Location3.2 Mi. W of US285
RouteCounty Highway 0
CountyJefferson County
StateColorado
Coordinates39.58864, -105.26625
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 protection8 Very GoodNo problems noted.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating86.2 US tons
Inventory rating51.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.7 m)
Longest span13 ft (3.9 m)
Deck width40 ft (12.3 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,586 (2020)
Projected traffic1,824 by 2040
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesPedestrian / bicycle
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 64 over Private Drive built?

It was built in 1995, making it 30 years old in 2025.

What condition is County Road 64 over Private Drive 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 64 over Private Drive carry?

About 1,586 vehicles per day (2020 count), of which roughly 4% are trucks.

How long is County Road 64 over Private Drive?

The structure is 25 ft (7.7 m) long with a longest span of 13 ft (3.9 m) and a deck 40 ft wide.

Who owns County Road 64 over Private Drive?

It is owned by the County Highway Agency.