US Bridges

Grizzly Drive over Deer Creek

Fair

Jefferson County, Colorado · Just S of Deer Ck Canyon · Structure no. G-15-110

Built
1978
47 years old
Condition
Fair
inspected February 2025
Type
Tee Beam
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
554
2021 count
Owner
County
County Highway Agency

About this bridge

Grizzly Drive over Deer Creek is a prestressed concrete tee beam carrying Grizzly Drive over Deer Creek in Jefferson County, Colorado. It was built in 1978, so it is 47 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 554 vehicles a day, projected to reach 637 by 2041. The structure is 42 ft (12.8 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesGrizzly Drive
CrossesDeer Creek
LocationJust S of Deer Ck Canyon
RouteCounty Highway 0
Coordinates39.54738, -105.15328
Functional classRural Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2025
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 geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating69.1 US tons
Inventory rating40.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadUnknown
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic554 (2021)
Projected traffic637 by 2041
Trucks0%
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 Grizzly Drive over Deer Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is Grizzly Drive over Deer 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 2025.

How much traffic does Grizzly Drive over Deer Creek carry?

About 554 vehicles per day (2021 count).

How long is Grizzly Drive over Deer Creek?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Grizzly Drive over Deer Creek?

It is owned by the County Highway Agency.