US Bridges

US 6 Ml over Frenchman Creek

Poor

Phillips County, Colorado · 0.6 MI E of JCT US 385 · Structure no. B-27-A

Built
1934
91 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
163 ft
7 main spans
Daily traffic
1,500
2020 count
Owner
State
State Highway Agency

About this bridge

US 6 Ml over Frenchman Creek is a wood or timber stringer/multi-beam or girder carrying US 6 Ml over Frenchman Creek in Phillips County, Colorado. It was built in 1934, so it is 91 years old, older than the Colorado average of 42.2 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 1,500 vehicles a day, roughly 20% of them trucks, projected to reach 1,680 by 2040. The structure is 163 ft (49.6 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesUS 6 Ml
CrossesFrenchman Creek
Location0.6 MI E of JCT US 385
RouteU.S. Route 6J
Coordinates40.58567, -102.29016
Functional classRural Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38.9 US tons
Inventory rating26.7 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans7
Design loadH 15
Structure length163 ft (49.6 m)
Longest span23 ft (7 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,500 (2020)
Projected traffic1,680 by 2040
Trucks20%
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

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US 6 Ml over Frenchman Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is US 6 Ml over Frenchman Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does US 6 Ml over Frenchman Creek carry?

About 1,500 vehicles per day (2020 count), of which roughly 20% are trucks.

How long is US 6 Ml over Frenchman Creek?

The structure is 163 ft (49.6 m) long with a longest span of 23 ft (7 m) and a deck 30 ft wide.

Who owns US 6 Ml over Frenchman Creek?

It is owned by the State Highway Agency.