US Bridges

FM over Red Oak Creek

Fair

Montgomery County, Iowa · 072382705 · Structure no. 000000000255610

Built
1968
57 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
130 ft
3 main spans
Daily traffic
1,275
2021 count
Owner
County
County Highway Agency

About this bridge

FM over Red Oak Creek is a concrete continuous slab carrying FM over Red Oak Creek in Montgomery County, Iowa. It was built in 1968, so it is 57 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 1,275 vehicles a day, projected to reach 1,275 by 2043. The structure is 130 ft (39.6 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM
CrossesRed Oak Creek
Location072382705
RouteCounty Highway 0
StateIowa
Coordinates41.01617, -95.2048
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating63.5 US tons
Inventory rating38 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length130 ft (39.6 m)
Longest span51 ft (15.5 m)
Deck width36 ft (11 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,275 (2021)
Projected traffic1,275 by 2043
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM over Red Oak Creek built?

It was built in 1968, making it 57 years old in 2025.

What condition is FM over Red Oak Creek 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 2023.

How much traffic does FM over Red Oak Creek carry?

About 1,275 vehicles per day (2021 count).

How long is FM over Red Oak Creek?

The structure is 130 ft (39.6 m) long with a longest span of 51 ft (15.5 m) and a deck 36 ft wide.

Who owns FM over Red Oak Creek?

It is owned by the County Highway Agency.