US Bridges

SH 71 Ml over Two Mile Creek

Fair

Weld County, Colorado · 18 MI North of JCT SH 14 · Structure no. A-22-B

Built
1957
68 years old
Condition
Fair
inspected March 2025
Type
Culvert
Steel
Length
32 ft
2 main spans
Daily traffic
1,000
2020 count
Owner
State
State Highway Agency

About this bridge

SH 71 Ml over Two Mile Creek is a steel culvert carrying SH 71 Ml over Two Mile Creek in Weld County, Colorado. It was built in 1957, so it is 68 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 1,000 vehicles a day, roughly 42% of them trucks, projected to reach 1,640 by 2040. The structure is 32 ft (9.8 m) long and 107 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSH 71 Ml
CrossesTwo Mile Creek
Location18 MI North of JCT SH 14
RouteState Highway 71F
Coordinates40.87919, -103.68968
Functional classRural Principal Arterial - Other

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 inspectionMarch 2025
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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating106.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span13 ft (4 m)
Deck width107 ft (32.6 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2020)
Projected traffic1,640 by 2040
Trucks42%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SH 71 Ml over Two Mile Creek built?

It was built in 1957, making it 68 years old in 2025.

What condition is SH 71 Ml over Two Mile 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 March 2025.

How much traffic does SH 71 Ml over Two Mile Creek carry?

About 1,000 vehicles per day (2020 count), of which roughly 42% are trucks.

How long is SH 71 Ml over Two Mile Creek?

The structure is 32 ft (9.8 m) long with a longest span of 13 ft (4 m) and a deck 107 ft wide.

Who owns SH 71 Ml over Two Mile Creek?

It is owned by the State Highway Agency.