US Bridges

FM Toledo Ave over Mill Creek

Fair

Harrison County, Iowa · 081412206 · Structure no. 000000000179221

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
139
2022 count
Owner
County
County Highway Agency

About this bridge

FM Toledo Ave over Mill Creek is a concrete continuous slab carrying FM Toledo Ave over Mill Creek in Harrison County, Iowa. It was built in 1977, so it is 48 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 5 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 139 vehicles a day, roughly 29% of them trucks, projected to reach 139 by 2044. The structure is 128 ft (39 m) long and 32 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesFM Toledo Ave
CrossesMill Creek
Location081412206
RouteCounty Highway 0
StateIowa
Coordinates41.81477, -95.61038
Functional classRural Major 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
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2024
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
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.4 US tons
Inventory rating33.3 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic139 (2022)
Projected traffic139 by 2044
Trucks29%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was FM Toledo Ave over Mill Creek built?

It was built in 1977, making it 48 years old in 2025.

What condition is FM Toledo Ave over Mill 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 February 2024.

How much traffic does FM Toledo Ave over Mill Creek carry?

About 139 vehicles per day (2022 count), of which roughly 29% are trucks.

How long is FM Toledo Ave over Mill Creek?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 32 ft wide.

Who owns FM Toledo Ave over Mill Creek?

It is owned by the County Highway Agency.