US Bridges

Killdeer Lane over Marlowe CR

PoorPosted for load

Worth County, Missouri · S 13 T 65 N R 32 W · Structure no. 21067

Built
1920
105 years old, rebuilt 1996
Condition
Poor
inspected December 2024
Type
Truss - Thru
Steel
Length
229 ft
1 main span
Daily traffic
15
2024 count
Owner
County
County Highway Agency

About this bridge

Killdeer Lane over Marlowe CR is a steel truss - thru carrying Killdeer Lane over Marlowe CR in Worth County, Missouri. It was built in 1920 and reconstructed in 1996, so it is 105 years old, older than the Missouri average of 45.1 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. Its operating status is: posted for load restriction.

It carries about 15 vehicles a day, roughly 25% of them trucks, projected to reach 17 by 2044. The structure is 229 ft (69.8 m) long and 10 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesKilldeer Lane
CrossesMarlowe CR
LocationS 13 T 65 N R 32 W
RouteCounty Highway 281
Coordinates40.43172, -94.44295
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
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 protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating39.7 US tons
Inventory rating23.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1 (+10 approach)
Design loadOther
Structure length229 ft (69.8 m)
Longest span88 ft (26.8 m)
Deck width10 ft (3 m)
Roadway width8 ft (2.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2024)
Projected traffic17 by 2044
Trucks25%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1.5 million (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Killdeer Lane over Marlowe CR built?

It was built in 1920, making it 105 years old in 2025. It was reconstructed in 1996.

What condition is Killdeer Lane over Marlowe CR 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 December 2024.

How much traffic does Killdeer Lane over Marlowe CR carry?

About 15 vehicles per day (2024 count), of which roughly 25% are trucks.

How long is Killdeer Lane over Marlowe CR?

The structure is 229 ft (69.8 m) long with a longest span of 88 ft (26.8 m) and a deck 10 ft wide.

Who owns Killdeer Lane over Marlowe CR?

It is owned by the County Highway Agency.