US Bridges

Coll 7406 over Milburn-Sargent Canal

Fair

Custer County, Nebraska · 1.5S 2.7E Millburn #109A · Structure no. C002156135

Built
1985
40 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
52 ft
2 main spans
Daily traffic
50
1998 count
Owner
County
County Highway Agency

About this bridge

Coll 7406 over Milburn-Sargent Canal is a steel continuous stringer/multi-beam or girder carrying Coll 7406 over Milburn-Sargent Canal in Custer County, Nebraska. It was built in 1985, so it is 40 years old, younger than the Nebraska average of 47.1 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 50 vehicles a day, projected to reach 85 by 2033. The structure is 52 ft (15.8 m) long and 28 ft wide. If it were closed, the detour would be 167.8 mi (270 km).

Location

Open in Google Maps
CarriesColl 7406
CrossesMilburn-Sargent Canal
Location1.5S 2.7E Millburn #109A
RouteCounty Highway 7406
CountyCuster County
StateNebraska
Coordinates41.6955, -99.6732
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating75 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadUnknown
Structure length52 ft (15.8 m)
Longest span25 ft (7.6 m)
Deck width28 ft (8.6 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (1998)
Projected traffic85 by 2033
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed167.8 mi (270 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Coll 7406 over Milburn-Sargent Canal built?

It was built in 1985, making it 40 years old in 2025.

What condition is Coll 7406 over Milburn-Sargent Canal 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 October 2023.

How much traffic does Coll 7406 over Milburn-Sargent Canal carry?

About 50 vehicles per day (1998 count).

How long is Coll 7406 over Milburn-Sargent Canal?

The structure is 52 ft (15.8 m) long with a longest span of 25 ft (7.6 m) and a deck 28 ft wide.

Who owns Coll 7406 over Milburn-Sargent Canal?

It is owned by the County Highway Agency.