US Bridges

County Road 67 over Big Thompson River

Good

Larimer County, Colorado · 0.2 MI E of CO RD 67E · Structure no. LR67-0.2-67E-A

Built
2009
16 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
67 ft
1 main span
Daily traffic
5,445
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 67 over Big Thompson River is a prestressed concrete box beam or girders - multiple carrying County Road 67 over Big Thompson River in Larimer County, Colorado. It was built in 2009, so it is 16 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 5,445 vehicles a day, roughly 14% of them trucks, projected to reach 6,807 by 2042. The structure is 67 ft (20.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 67
CrossesBig Thompson River
Location0.2 MI E of CO RD 67E
RouteCounty Highway 0
Coordinates40.36256, -105.5435
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating87.2 US tons
Inventory rating37.5 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length67 ft (20.4 m)
Longest span63 ft (19.2 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,445 (2023)
Projected traffic6,807 by 2042
Trucks14%
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 67 over Big Thompson River built?

It was built in 2009, making it 16 years old in 2025.

What condition is County Road 67 over Big Thompson River 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 June 2023.

How much traffic does County Road 67 over Big Thompson River carry?

About 5,445 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is County Road 67 over Big Thompson River?

The structure is 67 ft (20.4 m) long with a longest span of 63 ft (19.2 m) and a deck 44 ft wide.

Who owns County Road 67 over Big Thompson River?

It is owned by the County Highway Agency.