US Bridges

LCL-340th ST over Stream

Fair

Mills County, Iowa · 073411102 · Structure no. 000000000246761

Built
1981
44 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
109 ft
3 main spans
Daily traffic
20
2022 count
Owner
County
County Highway Agency

About this bridge

LCL-340th ST over Stream is a prestressed concrete tee beam carrying LCL-340th ST over Stream in Mills County, Iowa. It was built in 1981, so it is 44 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 5 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 20 vehicles a day, projected to reach 20 by 2043. The structure is 109 ft (33.2 m) long and 25 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLCL-340th ST
CrossesStream
Location073411102
RouteCounty Highway 0
CountyMills County
StateIowa
Coordinates41.13696, -95.53727
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44.8 US tons
Inventory rating26.9 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span43 ft (13.1 m)
Deck width25 ft (7.7 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20 (2022)
Projected traffic20 by 2043
Trucks0%
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was LCL-340th ST over Stream built?

It was built in 1981, making it 44 years old in 2025.

What condition is LCL-340th ST over Stream 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 March 2023.

How much traffic does LCL-340th ST over Stream carry?

About 20 vehicles per day (2022 count).

How long is LCL-340th ST over Stream?

The structure is 109 ft (33.2 m) long with a longest span of 43 ft (13.1 m) and a deck 25 ft wide.

Who owns LCL-340th ST over Stream?

It is owned by the County Highway Agency.