US Bridges

H38 Lambert Ave over Nishnabotna

Good

Mills County, Iowa · 072413501 · Structure no. 000000000246001

Built
2012
13 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
412 ft
3 main spans
Daily traffic
289
2022 count
Owner
County
County Highway Agency

About this bridge

H38 Lambert Ave over Nishnabotna is a prestressed concrete stringer/multi-beam or girder carrying H38 Lambert Ave over Nishnabotna in Mills County, Iowa. It was built in 2012, so it is 13 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 289 vehicles a day, roughly 19% of them trucks, projected to reach 289 by 2043. The structure is 412 ft (125.6 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesH38 Lambert Ave
CrossesNishnabotna
Location072413501
RouteCounty Highway 0
CountyMills County
StateIowa
Coordinates41.00185, -95.52836
Functional classRural Major Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating79.7 US tons
Inventory rating59 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+3 approach)
Design loadHL 93
Structure length412 ft (125.6 m)
Longest span137 ft (41.8 m)
Deck width33 ft (10.1 m)
Roadway width31 ft (9.3 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic289 (2022)
Projected traffic289 by 2043
Trucks19%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was H38 Lambert Ave over Nishnabotna built?

It was built in 2012, making it 13 years old in 2025.

What condition is H38 Lambert Ave over Nishnabotna 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 March 2023.

How much traffic does H38 Lambert Ave over Nishnabotna carry?

About 289 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is H38 Lambert Ave over Nishnabotna?

The structure is 412 ft (125.6 m) long with a longest span of 137 ft (41.8 m) and a deck 33 ft wide.

Who owns H38 Lambert Ave over Nishnabotna?

It is owned by the County Highway Agency.