US Bridges

County Road 70 over Box Elder Creek

Good

Larimer County, Colorado · 100 Ft E of CO RD 9 · Structure no. LR70-0.0-9-A

Built
2024
1 years old
Condition
Good
inspected March 2025
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
54 ft
1 main span
Daily traffic
3,852
2024 count
Owner
County
County Highway Agency

About this bridge

County Road 70 over Box Elder Creek is a prestressed concrete box beam or girders - multiple carrying County Road 70 over Box Elder Creek in Larimer County, Colorado. It was built in 2024, so it is 1 years old, younger than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,852 vehicles a day, projected to reach 4,586 by 2044. The structure is 54 ft (16.6 m) long and 74 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesCounty Road 70
CrossesBox Elder Creek
Location100 Ft E of CO RD 9
RouteCounty Highway 0
CountyLarimer County
StateColorado
Coordinates40.75517, -105.0188
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.8 US tons
Inventory rating37.1 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length54 ft (16.6 m)
Longest span49 ft (14.8 m)
Deck width74 ft (22.5 m)
Roadway width62 ft (19 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,852 (2024)
Projected traffic4,586 by 2044
Trucks0%
Lanes on structure3
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 70 over Box Elder Creek built?

It was built in 2024, making it 1 years old in 2025.

What condition is County Road 70 over Box Elder Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2025.

How much traffic does County Road 70 over Box Elder Creek carry?

About 3,852 vehicles per day (2024 count).

How long is County Road 70 over Box Elder Creek?

The structure is 54 ft (16.6 m) long with a longest span of 49 ft (14.8 m) and a deck 74 ft wide.

Who owns County Road 70 over Box Elder Creek?

It is owned by the County Highway Agency.