US Bridges

Prospect Ave over Br of Massey CR

PoorPosted for load

Cass County, Missouri · S 27 T 45 N R 33 W · Structure no. 18038

Built
1910
115 years old
Condition
Poor
inspected March 2023
Type
Truss - Thru
Steel
Length
81 ft
1 main span
Daily traffic
50
2024 count
Owner
County
County Highway Agency

About this bridge

Prospect Ave over Br of Massey CR is a steel truss - thru carrying Prospect Ave over Br of Massey CR in Cass County, Missouri. It was built in 1910, so it is 115 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 50 vehicles a day, roughly 5% of them trucks, projected to reach 80 by 2044. The structure is 81 ft (24.7 m) long and 14 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesProspect Ave
CrossesBr of Massey CR
LocationS 27 T 45 N R 33 W
RouteCounty Highway 170
CountyCass County
StateMissouri
Coordinates38.69474, -94.57338
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.9 US tons
Inventory rating6.9 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+1 approach)
Design loadH 10
Structure length81 ft (24.7 m)
Longest span56 ft (17.1 m)
Deck width14 ft (4.2 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2024)
Projected traffic80 by 2044
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$599,000 (2025 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Prospect Ave over Br of Massey CR built?

It was built in 1910, making it 115 years old in 2025.

What condition is Prospect Ave over Br of Massey 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 March 2023.

How much traffic does Prospect Ave over Br of Massey CR carry?

About 50 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is Prospect Ave over Br of Massey CR?

The structure is 81 ft (24.7 m) long with a longest span of 56 ft (17.1 m) and a deck 14 ft wide.

Who owns Prospect Ave over Br of Massey CR?

It is owned by the County Highway Agency.