US Bridges

1st Street over Coon Creek

Good

Tama County, Iowa · 085141000 · Structure no. 000000000011376

Built
2022
3 years old
Condition
Good
inspected September 2022
Type
Slab
Concrete Continuous
Length
81 ft
3 main spans
Daily traffic
281
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

1st Street over Coon Creek is a concrete continuous slab carrying 1st Street over Coon Creek in Tama County, Iowa. It was built in 2022, so it is 3 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 281 vehicles a day, projected to reach 281 by 2043. The structure is 81 ft (24.7 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries1st Street
CrossesCoon Creek
Location085141000
RouteCity Street 0
StateIowa
Coordinates42.19319, -92.45707
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating41.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length81 ft (24.7 m)
Longest span31 ft (9.4 m)
Deck width27 ft (8.3 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic281 (2022)
Projected traffic281 by 2043
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

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 1st Street over Coon Creek built?

It was built in 2022, making it 3 years old in 2025.

What condition is 1st Street over Coon Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2022.

How much traffic does 1st Street over Coon Creek carry?

About 281 vehicles per day (2022 count).

How long is 1st Street over Coon Creek?

The structure is 81 ft (24.7 m) long with a longest span of 31 ft (9.4 m) and a deck 27 ft wide.

Who owns 1st Street over Coon Creek?

It is owned by the City or Municipal Highway Agency.