US Bridges

County Road 36 over Platte Valley Canal

Fair

Weld County, Colorado · 0.8 MI E of CO RD 29 · Structure no. WEL036.0-029.0B

Built
1981
44 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
26 ft
1 main span
Daily traffic
103
2022 count
Owner
County
County Highway Agency

About this bridge

County Road 36 over Platte Valley Canal is a steel stringer/multi-beam or girder carrying County Road 36 over Platte Valley Canal in Weld County, Colorado. It was built in 1981, so it is 44 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 103 vehicles a day, roughly 58% of them trucks, projected to reach 147 by 2042. The structure is 26 ft (8 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 36
CrossesPlatte Valley Canal
Location0.8 MI E of CO RD 29
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.24679, -104.77622
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
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 alignment8: Equal to present desirable criteria
Operating rating64.9 US tons
Inventory rating38.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length26 ft (8 m)
Longest span23 ft (7.1 m)
Deck width32 ft (9.7 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic103 (2022)
Projected traffic147 by 2042
Trucks58%
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 36 over Platte Valley Canal built?

It was built in 1981, making it 44 years old in 2025.

What condition is County Road 36 over Platte Valley Canal 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 2024.

How much traffic does County Road 36 over Platte Valley Canal carry?

About 103 vehicles per day (2022 count), of which roughly 58% are trucks.

How long is County Road 36 over Platte Valley Canal?

The structure is 26 ft (8 m) long with a longest span of 23 ft (7.1 m) and a deck 32 ft wide.

Who owns County Road 36 over Platte Valley Canal?

It is owned by the County Highway Agency.