US Bridges

Mississippi RD over Stream

Good

Clayton County, Iowa · 093021803 · Structure no. 000000000119401

Built
2005
20 years old
Condition
Good
inspected October 2024
Type
Culvert
Concrete
Length
27 ft
2 main spans
Daily traffic
157
2022 count
Owner
County
County Highway Agency

About this bridge

Mississippi RD over Stream is a concrete culvert carrying Mississippi RD over Stream in Clayton County, Iowa. It was built in 2005, so it is 20 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 157 vehicles a day, roughly 23% of them trucks, projected to reach 157 by 2044. The structure is 27 ft (8.2 m) long and 50 ft wide. If it were closed, the detour would be 8.7 mi (14 km).

CarriesMississippi RD
CrossesStream
Location093021803
RouteCounty Highway 0
StateIowa
Coordinates42.87351, -91.11328
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.5 US tons
Inventory rating35.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length27 ft (8.2 m)
Longest span12 ft (3.7 m)
Deck width50 ft (15.2 m)
Roadway width48 ft (14.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic157 (2022)
Projected traffic157 by 2044
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.7 mi (14 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 Mississippi RD over Stream built?

It was built in 2005, making it 20 years old in 2025.

What condition is Mississippi RD over Stream 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 October 2024.

How much traffic does Mississippi RD over Stream carry?

About 157 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is Mississippi RD over Stream?

The structure is 27 ft (8.2 m) long with a longest span of 12 ft (3.7 m) and a deck 50 ft wide.

Who owns Mississippi RD over Stream?

It is owned by the County Highway Agency.