US Bridges

County Road 37 over N Fork Frenchman Creek

FairPosted for load

Phillips County, Colorado · 0.1 Mi. No. of US HWY 6 · Structure no. PH37-0.1-S6

Built
1967
58 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
82 ft
3 main spans
Daily traffic
48
2023 count
Owner
County
County Highway Agency

About this bridge

County Road 37 over N Fork Frenchman Creek is a steel continuous stringer/multi-beam or girder carrying County Road 37 over N Fork Frenchman Creek in Phillips County, Colorado. It was built in 1967, so it is 58 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. Its operating status is: posted for load restriction.

It carries about 48 vehicles a day, roughly 10% of them trucks, projected to reach 57 by 2042. The structure is 82 ft (25.1 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesCounty Road 37
CrossesN Fork Frenchman Creek
Location0.1 Mi. No. of US HWY 6
RouteCounty Highway 0
Coordinates40.58797, -102.32139
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating7.4 US tons
Inventory rating3.9 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25.1 m)
Longest span30 ft (9.2 m)
Deck width26 ft (7.9 m)
Roadway width26 ft (7.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2023)
Projected traffic57 by 2042
Trucks10%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.6 million (2017 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was County Road 37 over N Fork Frenchman Creek built?

It was built in 1967, making it 58 years old in 2025.

What condition is County Road 37 over N Fork Frenchman 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 November 2023.

How much traffic does County Road 37 over N Fork Frenchman Creek carry?

About 48 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is County Road 37 over N Fork Frenchman Creek?

The structure is 82 ft (25.1 m) long with a longest span of 30 ft (9.2 m) and a deck 26 ft wide.

Who owns County Road 37 over N Fork Frenchman Creek?

It is owned by the County Highway Agency.