US Bridges

FM over Mccandless Cleghorn D D

Fair

Monona County, Iowa · 083452801 · Structure no. 000000000250330

Built
1969
56 years old
Condition
Fair
inspected May 2024
Type
Tee Beam
Prestressed Concrete
Length
30 ft
1 main span
Daily traffic
45
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Mccandless Cleghorn D D is a prestressed concrete tee beam carrying FM over Mccandless Cleghorn D D in Monona County, Iowa. It was built in 1969, so it is 56 years old, older than the Iowa average of 45.5 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 45 vehicles a day, projected to reach 45 by 2044. The structure is 30 ft (9.1 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesMccandless Cleghorn D D
Location083452801
RouteCounty Highway 0
StateIowa
Coordinates41.97956, -96.09035
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
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating64.7 US tons
Inventory rating38.8 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length30 ft (9.1 m)
Longest span29 ft (8.8 m)
Deck width25 ft (7.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic45 (2022)
Projected traffic45 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Mccandless Cleghorn D D built?

It was built in 1969, making it 56 years old in 2025.

What condition is FM over Mccandless Cleghorn D D 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 May 2024.

How much traffic does FM over Mccandless Cleghorn D D carry?

About 45 vehicles per day (2022 count).

How long is FM over Mccandless Cleghorn D D?

The structure is 30 ft (9.1 m) long with a longest span of 29 ft (8.8 m) and a deck 25 ft wide.

Who owns FM over Mccandless Cleghorn D D?

It is owned by the County Highway Agency.