US Bridges

FM 145 Ave over Prairie Creek

Fair

Delaware County, Iowa · 089062604 · Structure no. 000000000142031

Built
1971
54 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
155 ft
3 main spans
Daily traffic
1,296
2022 count
Owner
County
County Highway Agency

About this bridge

FM 145 Ave over Prairie Creek is a steel continuous stringer/multi-beam or girder carrying FM 145 Ave over Prairie Creek in Delaware County, Iowa. It was built in 1971, so it is 54 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 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 1,296 vehicles a day, roughly 9% of them trucks, projected to reach 1,296 by 2044. The structure is 155 ft (47.2 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesFM 145 Ave
CrossesPrairie Creek
Location089062604
RouteCounty Highway 0
StateIowa
Coordinates42.49385, -91.51956
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 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating65 US tons
Inventory rating44 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length155 ft (47.2 m)
Longest span57 ft (17.4 m)
Deck width32 ft (9.8 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,296 (2022)
Projected traffic1,296 by 2044
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 145 Ave over Prairie Creek built?

It was built in 1971, making it 54 years old in 2025.

What condition is FM 145 Ave over Prairie 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 2024.

How much traffic does FM 145 Ave over Prairie Creek carry?

About 1,296 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is FM 145 Ave over Prairie Creek?

The structure is 155 ft (47.2 m) long with a longest span of 57 ft (17.4 m) and a deck 32 ft wide.

Who owns FM 145 Ave over Prairie Creek?

It is owned by the County Highway Agency.