US Bridges

County Road 29 over Missouri Canyon Creek

Fair

Larimer County, Colorado · 2.7 MI N of CO RD 22H · Structure no. LR29-2.7-22H

Built
1979
46 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Prestressed Concrete
Length
29 ft
1 main span
Daily traffic
330
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 29 over Missouri Canyon Creek is a prestressed concrete tee beam carrying County Road 29 over Missouri Canyon Creek in Larimer County, Colorado. It was built in 1979, so it is 46 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 330 vehicles a day, roughly 14% of them trucks, projected to reach 412 by 2042. The structure is 29 ft (8.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 29
CrossesMissouri Canyon Creek
Location2.7 MI N of CO RD 22H
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.45775, -105.20967
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating56.9 US tons
Inventory rating34.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length29 ft (8.7 m)
Longest span25 ft (7.7 m)
Deck width27 ft (8.2 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic330 (2023)
Projected traffic412 by 2042
Trucks14%
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 29 over Missouri Canyon Creek built?

It was built in 1979, making it 46 years old in 2025.

What condition is County Road 29 over Missouri Canyon 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 May 2023.

How much traffic does County Road 29 over Missouri Canyon Creek carry?

About 330 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is County Road 29 over Missouri Canyon Creek?

The structure is 29 ft (8.7 m) long with a longest span of 25 ft (7.7 m) and a deck 27 ft wide.

Who owns County Road 29 over Missouri Canyon Creek?

It is owned by the County Highway Agency.