US Bridges

County Road 33 over Union Ditch

Fair

Weld County, Colorado · 50 Ft So of CO RD 394 · Structure no. EVN033.0-048.0A

Built
1940
85 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
23 ft
1 main span
Daily traffic
369
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

County Road 33 over Union Ditch is a concrete slab carrying County Road 33 over Union Ditch in Weld County, Colorado. It was built in 1940, so it is 85 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 6 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 369 vehicles a day, roughly 32% of them trucks, projected to reach 524 by 2042. The structure is 23 ft (7 m) long and 20 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 33
CrossesUnion Ditch
Location50 Ft So of CO RD 394
RouteCity Street 0
CountyWeld County
StateColorado
Coordinates40.34011, -104.75411
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length23 ft (7 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.2 m)
Roadway width18 ft (5.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic369 (2023)
Projected traffic524 by 2042
Trucks32%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$98,000 (2018 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 33 over Union Ditch built?

It was built in 1940, making it 85 years old in 2025.

What condition is County Road 33 over Union 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 April 2024.

How much traffic does County Road 33 over Union Ditch carry?

About 369 vehicles per day (2023 count), of which roughly 32% are trucks.

How long is County Road 33 over Union Ditch?

The structure is 23 ft (7 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns County Road 33 over Union Ditch?

It is owned by the City or Municipal Highway Agency.