US Bridges

Floyd Line ST over Stream

Good

Butler County, Iowa · 093150401 · Structure no. 000000000089191

Built
1971
54 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
128 ft
3 main spans
Daily traffic
10
2022 count
Owner
County
County Highway Agency

About this bridge

Floyd Line ST over Stream is a concrete continuous slab carrying Floyd Line ST over Stream in Butler County, Iowa. It was built in 1971, so it is 54 years old, older 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 10 vehicles a day, projected to reach 10 by 2044. The structure is 128 ft (39 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesFloyd Line ST
CrossesStream
Location093150401
RouteCounty Highway 0
StateIowa
Coordinates42.90711, -92.61847
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41 US tons
Inventory rating24.6 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length128 ft (39 m)
Longest span49 ft (14.9 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2022)
Projected traffic10 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 Floyd Line ST over Stream built?

It was built in 1971, making it 54 years old in 2025.

What condition is Floyd Line ST 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 April 2024.

How much traffic does Floyd Line ST over Stream carry?

About 10 vehicles per day (2022 count).

How long is Floyd Line ST over Stream?

The structure is 128 ft (39 m) long with a longest span of 49 ft (14.9 m) and a deck 26 ft wide.

Who owns Floyd Line ST over Stream?

It is owned by the County Highway Agency.