US Bridges

FM SW Naples Av over Dirty Face Creek

Fair

Johnson County, Iowa · 078061704 · Structure no. 000000000203271

Built
1980
45 years old
Condition
Fair
inspected April 2023
Type
Slab
Concrete Continuous
Length
91 ft
3 main spans
Daily traffic
270
2021 count
Owner
County
County Highway Agency

About this bridge

FM SW Naples Av over Dirty Face Creek is a concrete continuous slab carrying FM SW Naples Av over Dirty Face Creek in Johnson County, Iowa. It was built in 1980, so it is 45 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 270 vehicles a day, roughly 17% of them trucks, projected to reach 270 by 2043. The structure is 91 ft (27.7 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM SW Naples Av
CrossesDirty Face Creek
Location078061704
RouteCounty Highway 0
StateIowa
Coordinates41.55753, -91.57998
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.4 US tons
Inventory rating33.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span33 ft (10.1 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic270 (2021)
Projected traffic270 by 2043
Trucks17%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM SW Naples Av over Dirty Face Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is FM SW Naples Av over Dirty Face 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 April 2023.

How much traffic does FM SW Naples Av over Dirty Face Creek carry?

About 270 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is FM SW Naples Av over Dirty Face Creek?

The structure is 91 ft (27.7 m) long with a longest span of 33 ft (10.1 m) and a deck 33 ft wide.

Who owns FM SW Naples Av over Dirty Face Creek?

It is owned by the County Highway Agency.