US Bridges

W 4th ST over Red Oak Creek

Fair

Montgomery County, Iowa · 000000000 · Structure no. 000000000009761

Built
1986
39 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
38 ft
3 main spans
Daily traffic
501
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

W 4th ST over Red Oak Creek is a concrete culvert carrying W 4th ST over Red Oak Creek in Montgomery County, Iowa. It was built in 1986, so it is 39 years old, younger 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 6 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 501 vehicles a day, projected to reach 501 by 2043. The structure is 38 ft (11.6 m) long.

Location

Open in Google Maps
CarriesW 4th ST
CrossesRed Oak Creek
Location000000000
RouteCity Street 0
CountyMontgomery County
StateIowa
Coordinates41.00688, -95.23667
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 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
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.4 US tons
Inventory rating21.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic501 (2022)
Projected traffic501 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was W 4th ST over Red Oak Creek built?

It was built in 1986, making it 39 years old in 2025.

What condition is W 4th ST 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 December 2023.

How much traffic does W 4th ST over Red Oak Creek carry?

About 501 vehicles per day (2022 count).

How long is W 4th ST over Red Oak Creek?

The structure is 38 ft (11.6 m) long with a longest span of 12 ft (3.7 m).

Who owns W 4th ST over Red Oak Creek?

It is owned by the City or Municipal Highway Agency.