US Bridges

US 34 Business over Fall River

Fair

Larimer County, Colorado · W Side of Estes Park · Structure no. C-14-K

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
4,314
2023 count
Owner
State
State Highway Agency

About this bridge

US 34 Business over Fall River is a concrete culvert carrying US 34 Business over Fall River in Larimer 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 4,314 vehicles a day, roughly 2% of them trucks, projected to reach 5,393 by 2042. The structure is 23 ft (6.9 m) long and 60 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesUS 34 Business
CrossesFall River
LocationW Side of Estes Park
RouteU.S. Route 34C
Coordinates40.3761, -105.5261
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
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 geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.1 US tons
Inventory rating28.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (6.9 m)
Longest span10 ft (3.2 m)
Deck width60 ft (18.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,314 (2023)
Projected traffic5,393 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$128,000 (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US 34 Business over Fall River built?

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

What condition is US 34 Business over Fall River 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 September 2023.

How much traffic does US 34 Business over Fall River carry?

About 4,314 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is US 34 Business over Fall River?

The structure is 23 ft (6.9 m) long with a longest span of 10 ft (3.2 m) and a deck 60 ft wide.

Who owns US 34 Business over Fall River?

It is owned by the State Highway Agency.