US Bridges

FM Spruce Ave over Maynes Creek

PoorPosted for load

Franklin County, Iowa · 091191802 · Structure no. 000000000156880

Built
1952
73 years old
Condition
Poor
inspected May 2024
Type
Slab
Concrete Continuous
Length
176 ft
4 main spans
Daily traffic
49
2022 count
Owner
County
County Highway Agency

About this bridge

FM Spruce Ave over Maynes Creek is a concrete continuous slab carrying FM Spruce Ave over Maynes Creek in Franklin County, Iowa. It was built in 1952, so it is 73 years old, older 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 3 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 49 vehicles a day, projected to reach 49 by 2044. The structure is 176 ft (53.6 m) long and 23 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesFM Spruce Ave
CrossesMaynes Creek
Location091191802
RouteCounty Highway 0
StateIowa
Coordinates42.69191, -93.14379
Functional classRural Major Collector

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
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.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating20 US tons
Inventory rating4.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length176 ft (53.6 m)
Longest span49 ft (14.9 m)
Deck width23 ft (6.9 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2022)
Projected traffic49 by 2044
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM Spruce Ave over Maynes Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is FM Spruce Ave over Maynes 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 May 2024.

How much traffic does FM Spruce Ave over Maynes Creek carry?

About 49 vehicles per day (2022 count).

How long is FM Spruce Ave over Maynes Creek?

The structure is 176 ft (53.6 m) long with a longest span of 49 ft (14.9 m) and a deck 23 ft wide.

Who owns FM Spruce Ave over Maynes Creek?

It is owned by the County Highway Agency.