US Bridges

County Road 31D over Handy Ditch

Good

Larimer County, Colorado · 50 Ft N of CO RD 22H · Structure no. LR31D-0.0-22H-A

Built
1951
74 years old, rebuilt 1990
Condition
Good
inspected March 2023
Type
Slab
Wood or Timber
Length
29 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 31D over Handy Ditch is a wood or timber slab carrying County Road 31D over Handy Ditch in Larimer County, Colorado. It was built in 1951 and reconstructed in 1990, so it is 74 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 250 vehicles a day, roughly 13% of them trucks, projected to reach 313 by 2043. The structure is 29 ft (8.8 m) long and 20 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesCounty Road 31D
CrossesHandy Ditch
Location50 Ft N of CO RD 22H
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.42061, -105.22061
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating58.2 US tons

Structure

Structure typeSlab
MaterialWood or Timber
DeckWood or timber
Main spans1
Design loadHS 20
Structure length29 ft (8.8 m)
Longest span27 ft (8.1 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic313 by 2043
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$145,000 (2019 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was County Road 31D over Handy Ditch built?

It was built in 1951, making it 74 years old in 2025. It was reconstructed in 1990.

What condition is County Road 31D over Handy Ditch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does County Road 31D over Handy Ditch carry?

About 250 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is County Road 31D over Handy Ditch?

The structure is 29 ft (8.8 m) long with a longest span of 27 ft (8.1 m) and a deck 20 ft wide.

Who owns County Road 31D over Handy Ditch?

It is owned by the County Highway Agency.