US Bridges

T47 Q Ave over Mosquito Creek

Good

Grundy County, Iowa · 087163402 · Structure no. 000000000164292

Built
2022
3 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
628
2022 count
Owner
County
County Highway Agency

About this bridge

T47 Q Ave over Mosquito Creek is a concrete continuous culvert carrying T47 Q Ave over Mosquito Creek in Grundy 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 628 vehicles a day, roughly 18% of them trucks, projected to reach 628 by 2043. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesT47 Q Ave
CrossesMosquito Creek
Location087163402
RouteCounty Highway 0
CountyGrundy County
StateIowa
Coordinates42.29864, -92.70927
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating38.6 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic628 (2022)
Projected traffic628 by 2043
Trucks18%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was T47 Q Ave over Mosquito Creek built?

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

What condition is T47 Q Ave over Mosquito 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 April 2023.

How much traffic does T47 Q Ave over Mosquito Creek carry?

About 628 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is T47 Q Ave over Mosquito Creek?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns T47 Q Ave over Mosquito Creek?

It is owned by the County Highway Agency.