US Bridges

Ia 148 over Br E Nodaway River

Fair

Adams County, Iowa · 0.4 Mi. N of SR N28 · Structure no. 000000000013420

Built
1931
94 years old, rebuilt 1959
Condition
Fair
inspected May 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
192 ft
3 main spans
Daily traffic
770
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 148 over Br E Nodaway River is a steel continuous stringer/multi-beam or girder carrying Ia 148 over Br E Nodaway River in Adams County, Iowa. It was built in 1931 and reconstructed in 1959, so it is 94 years old, older 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 770 vehicles a day, roughly 23% of them trucks, projected to reach 770 by 2042. The structure is 192 ft (58.5 m) long and 36 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesIa 148
CrossesBr E Nodaway River
Location0.4 Mi. N of SR N28
RouteState Highway 148
CountyAdams County
StateIowa
Coordinates41.04621, -94.75698
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.8 US tons
Inventory rating31.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length192 ft (58.5 m)
Longest span82 ft (25 m)
Deck width36 ft (11 m)
Roadway width30 ft (9.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic770 (2022)
Projected traffic770 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 148 over Br E Nodaway River built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 1959.

What condition is Ia 148 over Br E Nodaway River 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 May 2024.

How much traffic does Ia 148 over Br E Nodaway River carry?

About 770 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is Ia 148 over Br E Nodaway River?

The structure is 192 ft (58.5 m) long with a longest span of 82 ft (25 m) and a deck 36 ft wide.

Who owns Ia 148 over Br E Nodaway River?

It is owned by the State Highway Agency.