US Bridges

CR 904/CR 13 over Little Thompson River

Good

Larimer County, Colorado · 0.2 MI N of CO RD 6C · Structure no. LR904-0.2-6C-A

Built
1988
37 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
104 ft
1 main span
Daily traffic
3,225
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

CR 904/CR 13 over Little Thompson River is a prestressed concrete stringer/multi-beam or girder carrying CR 904/CR 13 over Little Thompson River in Larimer County, Colorado. It was built in 1988, so it is 37 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 3,225 vehicles a day, roughly 23% of them trucks, projected to reach 4,031 by 2042. The structure is 104 ft (31.6 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCR 904/CR 13
CrossesLittle Thompson River
Location0.2 MI N of CO RD 6C
RouteCity Street 0
Coordinates40.2968, -105.05525
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
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 rating83.6 US tons
Inventory rating37.1 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length104 ft (31.6 m)
Longest span99 ft (30.1 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,225 (2023)
Projected traffic4,031 by 2042
Trucks23%
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 CR 904/CR 13 over Little Thompson River built?

It was built in 1988, making it 37 years old in 2025.

What condition is CR 904/CR 13 over Little 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 May 2023.

How much traffic does CR 904/CR 13 over Little Thompson River carry?

About 3,225 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is CR 904/CR 13 over Little Thompson River?

The structure is 104 ft (31.6 m) long with a longest span of 99 ft (30.1 m) and a deck 34 ft wide.

Who owns CR 904/CR 13 over Little Thompson River?

It is owned by the City or Municipal Highway Agency.