US Bridges

SH 71 Ml over North Rush Creek

Fair

Lincoln County, Colorado · 13.2 MI S of Limon · Structure no. H-22-A

Built
1957
68 years old
Condition
Fair
inspected April 2023
Type
Tee Beam
Concrete
Length
181 ft
5 main spans
Daily traffic
700
2020 count
Owner
State
State Highway Agency

About this bridge

SH 71 Ml over North Rush Creek is a concrete tee beam carrying SH 71 Ml over North Rush Creek in Lincoln 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 6 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 700 vehicles a day, roughly 24% of them trucks, projected to reach 980 by 2040. The structure is 181 ft (55.3 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesSH 71 Ml
CrossesNorth Rush Creek
Location13.2 MI S of Limon
RouteState Highway 71C
Coordinates39.06089, -103.70334
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.2 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length181 ft (55.3 m)
Longest span35 ft (10.7 m)
Deck width32 ft (9.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (2020)
Projected traffic980 by 2040
Trucks24%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 proposedNone recorded
Estimated improvement cost$314,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SH 71 Ml over North Rush Creek built?

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

What condition is SH 71 Ml over North Rush 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 April 2023.

How much traffic does SH 71 Ml over North Rush Creek carry?

About 700 vehicles per day (2020 count), of which roughly 24% are trucks.

How long is SH 71 Ml over North Rush Creek?

The structure is 181 ft (55.3 m) long with a longest span of 35 ft (10.7 m) and a deck 32 ft wide.

Who owns SH 71 Ml over North Rush Creek?

It is owned by the State Highway Agency.