US Bridges

6th ST over Mill Creek

Poor

Cass County, Nebraska · Louisville 6th @ Walnut · Structure no. M1465E1005

Built
1935
90 years old
Condition
Poor
inspected September 2024
Type
Girder and Floorbeam System
Steel
Length
60 ft
1 main span
Daily traffic
300
2003 count
Owner
City
City or Municipal Highway Agency

About this bridge

6th ST over Mill Creek is a steel girder and floorbeam system carrying 6th ST over Mill Creek in Cass County, Nebraska. It was built in 1935, so it is 90 years old, older than the Nebraska average of 47.1 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 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. Its operating status is: open, temporary structure in place while original is closed.

It carries about 300 vehicles a day, roughly 10% of them trucks, projected to reach 435 by 2033. The structure is 60 ft (18.3 m) long and 16 ft wide. If it were closed, the detour would be 12.4 mi (20 km).

Carries6th ST
CrossesMill Creek
LocationLouisville 6th @ Walnut
RouteCity Street 0E10
Coordinates40.9965, -96.1603
Functional classRural Local

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
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, temporary structure in place while original is closed
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating0 US tons
Inventory rating0 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width16 ft (4.9 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic300 (2003)
Projected traffic435 by 2033
Trucks10%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed12.4 mi (20 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 6th ST over Mill Creek built?

It was built in 1935, making it 90 years old in 2025.

What condition is 6th ST over Mill 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 September 2024.

How much traffic does 6th ST over Mill Creek carry?

About 300 vehicles per day (2003 count), of which roughly 10% are trucks.

How long is 6th ST over Mill Creek?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 16 ft wide.

Who owns 6th ST over Mill Creek?

It is owned by the City or Municipal Highway Agency.