US Bridges

County Road 24 over Little Grizzly Creek

Fair

Jackson County, Colorado · 2.7 MI W of ST HWY 14 · Structure no. 57002402.70018

Built
1977
48 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
41 ft
1 main span
Daily traffic
113
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 24 over Little Grizzly Creek is a steel stringer/multi-beam or girder carrying County Road 24 over Little Grizzly Creek in Jackson County, Colorado. It was built in 1977, so it is 48 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 113 vehicles a day, roughly 23% of them trucks, projected to reach 147 by 2043. The structure is 41 ft (12.4 m) long and 24 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

Open in Google Maps
CarriesCounty Road 24
CrossesLittle Grizzly Creek
Location2.7 MI W of ST HWY 14
RouteCounty Highway 0
CountyJackson County
StateColorado
Coordinates40.57774, -106.45083
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating23.3 US tons
Inventory rating13.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length41 ft (12.4 m)
Longest span37 ft (11.3 m)
Deck width24 ft (7.2 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113 (2023)
Projected traffic147 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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 24 over Little Grizzly Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is County Road 24 over Little Grizzly 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 November 2024.

How much traffic does County Road 24 over Little Grizzly Creek carry?

About 113 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is County Road 24 over Little Grizzly Creek?

The structure is 41 ft (12.4 m) long with a longest span of 37 ft (11.3 m) and a deck 24 ft wide.

Who owns County Road 24 over Little Grizzly Creek?

It is owned by the County Highway Agency.