US Bridges

78th ST over Unamed Creek

PoorPosted for load

Fayette County, Iowa · 092103203 · Structure no. 000000000150861

Built
1995
30 years old
Condition
Poor
inspected October 2024
Type
Culvert
Steel
Length
50 ft
3 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

78th ST over Unamed Creek is a steel culvert carrying 78th ST over Unamed Creek in Fayette County, Iowa. It was built in 1995, so it is 30 years old, younger than the Iowa average of 45.5 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 15 vehicles a day, projected to reach 15 by 2044. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
Carries78th ST
CrossesUnamed Creek
Location092103203
RouteCounty Highway 0
CountyFayette County
StateIowa
Coordinates42.74048, -92.04542
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.9 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2044
Trucks0%
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 78th ST over Unamed Creek built?

It was built in 1995, making it 30 years old in 2025.

What condition is 78th ST over Unamed Creek 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 October 2024.

How much traffic does 78th ST over Unamed Creek carry?

About 15 vehicles per day (2022 count).

How long is 78th ST over Unamed Creek?

The structure is 50 ft (15.2 m) long with a longest span of 13 ft (4 m).

Who owns 78th ST over Unamed Creek?

It is owned by the County Highway Agency.