US Bridges

FM over Hewitt Creek

Fair

Dubuque County, Iowa · 089021303 · Structure no. 000000000147581

Built
1983
42 years old
Condition
Fair
inspected June 2023
Type
Culvert
Steel
Length
36 ft
2 main spans
Daily traffic
226
2022 count
Owner
County
County Highway Agency

About this bridge

FM over Hewitt Creek is a steel culvert carrying FM over Hewitt Creek in Dubuque County, Iowa. It was built in 1983, so it is 42 years old, younger 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 226 vehicles a day, roughly 7% of them trucks, projected to reach 226 by 2043. The structure is 36 ft (11 m) long.

CarriesFM
CrossesHewitt Creek
Location089021303
RouteCounty Highway 0
StateIowa
Coordinates42.52478, -91.03359
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 inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadH 20
Structure length36 ft (11 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic226 (2022)
Projected traffic226 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 over Hewitt Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is FM over Hewitt 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 June 2023.

How much traffic does FM over Hewitt Creek carry?

About 226 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is FM over Hewitt Creek?

The structure is 36 ft (11 m) long with a longest span of 16 ft (4.9 m).

Who owns FM over Hewitt Creek?

It is owned by the County Highway Agency.