US Bridges

County Road 55 over Latham Ditch

Fair

Weld County, Colorado · 0.5 MI N of CO RD 52 · Structure no. WEL055.0-052.0A

Built
1960
65 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
31 ft
1 main span
Daily traffic
237
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 55 over Latham Ditch is a steel stringer/multi-beam or girder carrying County Road 55 over Latham Ditch in Weld County, Colorado. It was built in 1960, so it is 65 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 237 vehicles a day, roughly 40% of them trucks, projected to reach 336 by 2042. The structure is 31 ft (9.3 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesCounty Road 55
CrossesLatham Ditch
Location0.5 MI N of CO RD 52
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.36997, -104.54516
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 protection7 GoodSome minor problems.
Last inspectionFebruary 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40.5 US tons
Inventory rating24.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length31 ft (9.3 m)
Longest span27 ft (8.3 m)
Deck width24 ft (7.2 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic237 (2023)
Projected traffic336 by 2042
Trucks40%
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 55 over Latham Ditch built?

It was built in 1960, making it 65 years old in 2025.

What condition is County Road 55 over Latham 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 February 2024.

How much traffic does County Road 55 over Latham Ditch carry?

About 237 vehicles per day (2023 count), of which roughly 40% are trucks.

How long is County Road 55 over Latham Ditch?

The structure is 31 ft (9.3 m) long with a longest span of 27 ft (8.3 m) and a deck 24 ft wide.

Who owns County Road 55 over Latham Ditch?

It is owned by the County Highway Agency.