US Bridges

330 TH / E63 over Mosquito Creek

Fair

Greene County, Iowa · 082313401 · Structure no. 000000000161941

Built
1978
47 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
199
2022 count
Owner
County
County Highway Agency

About this bridge

330 TH / E63 over Mosquito Creek is a concrete culvert carrying 330 TH / E63 over Mosquito Creek in Greene County, Iowa. It was built in 1978, so it is 47 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 199 vehicles a day, roughly 20% of them trucks, projected to reach 199 by 2044. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
Carries330 TH / E63
CrossesMosquito Creek
Location082313401
RouteCounty Highway 0
CountyGreene County
StateIowa
Coordinates41.87767, -94.44927
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10.1 m)
Longest span11 ft (3.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic199 (2022)
Projected traffic199 by 2044
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 330 TH / E63 over Mosquito Creek built?

It was built in 1978, making it 47 years old in 2025.

What condition is 330 TH / E63 over Mosquito 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 July 2024.

How much traffic does 330 TH / E63 over Mosquito Creek carry?

About 199 vehicles per day (2022 count), of which roughly 20% are trucks.

How long is 330 TH / E63 over Mosquito Creek?

The structure is 33 ft (10.1 m) long with a longest span of 11 ft (3.4 m).

Who owns 330 TH / E63 over Mosquito Creek?

It is owned by the County Highway Agency.