US Bridges

County Road 17 over Jackson Ditch

Fair

Larimer County, Colorado · 0.2 MI No of CO RD 54 · Structure no. LR17-0.2-54

Built
1986
39 years old
Condition
Fair
inspected March 2025
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
2,822
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 17 over Jackson Ditch is a steel culvert carrying County Road 17 over Jackson Ditch in Larimer County, Colorado. It was built in 1986, so it is 39 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 2,822 vehicles a day, roughly 16% of them trucks, projected to reach 3,528 by 2043. The structure is 20 ft (6.2 m) long and 69 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 17
CrossesJackson Ditch
Location0.2 MI No of CO RD 54
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.643, -105.09508
Functional classUrban 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
Channel and channel protection7 GoodSome minor problems.
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
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 20
Structure length20 ft (6.2 m)
Longest span20 ft (6.2 m)
Deck width69 ft (20.9 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,822 (2023)
Projected traffic3,528 by 2043
Trucks16%
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 17 over Jackson Ditch built?

It was built in 1986, making it 39 years old in 2025.

What condition is County Road 17 over Jackson Ditch 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 17 over Jackson Ditch carry?

About 2,822 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is County Road 17 over Jackson Ditch?

The structure is 20 ft (6.2 m) long with a longest span of 20 ft (6.2 m) and a deck 69 ft wide.

Who owns County Road 17 over Jackson Ditch?

It is owned by the County Highway Agency.