US Bridges

County Road 49 over Lone Tree Creek

Fair

Weld County, Colorado · 0.5 MI N of ST HWY 392 · Structure no. WEL049.0-068.0A

Built
1970
55 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
23 ft
1 main span
Daily traffic
131
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 49 over Lone Tree Creek is a prestressed concrete tee beam carrying County Road 49 over Lone Tree Creek in Weld County, Colorado. It was built in 1970, so it is 55 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 131 vehicles a day, roughly 45% of them trucks, projected to reach 186 by 2043. The structure is 23 ft (6.9 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 49
CrossesLone Tree Creek
Location0.5 MI N of ST HWY 392
RouteCounty Highway 0
CountyWeld County
StateColorado
Coordinates40.48615, -104.60184
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 inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length23 ft (6.9 m)
Longest span20 ft (6.2 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic131 (2023)
Projected traffic186 by 2043
Trucks45%
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 49 over Lone Tree Creek built?

It was built in 1970, making it 55 years old in 2025.

What condition is County Road 49 over Lone Tree 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 2024.

How much traffic does County Road 49 over Lone Tree Creek carry?

About 131 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is County Road 49 over Lone Tree Creek?

The structure is 23 ft (6.9 m) long with a longest span of 20 ft (6.2 m) and a deck 28 ft wide.

Who owns County Road 49 over Lone Tree Creek?

It is owned by the County Highway Agency.