US Bridges

G 15 (140th St) over Middle Nodaway River

Good

Adair County, Iowa · 77332870 · Structure no. 000000000058461

Built
2012
13 years old
Condition
Good
inspected July 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
44 ft
1 main span
Daily traffic
60
2022 count
Owner
County
County Highway Agency

About this bridge

G 15 (140th St) over Middle Nodaway River is a steel stringer/multi-beam or girder carrying G 15 (140th St) over Middle Nodaway River in Adair 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 60 vehicles a day, projected to reach 60 by 2044. The structure is 44 ft (13.5 m) long and 25 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesG 15 (140th St)
CrossesMiddle Nodaway River
Location77332870
RouteCounty Highway 0
StateIowa
Coordinates41.44626, -94.65066
Functional classRural Minor 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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating71 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length44 ft (13.5 m)
Longest span43 ft (13.2 m)
Deck width25 ft (7.7 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2022)
Projected traffic60 by 2044
Trucks0%
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 statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was G 15 (140th St) over Middle Nodaway River built?

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

What condition is G 15 (140th St) over Middle Nodaway River 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 July 2024.

How much traffic does G 15 (140th St) over Middle Nodaway River carry?

About 60 vehicles per day (2022 count).

How long is G 15 (140th St) over Middle Nodaway River?

The structure is 44 ft (13.5 m) long with a longest span of 43 ft (13.2 m) and a deck 25 ft wide.

Who owns G 15 (140th St) over Middle Nodaway River?

It is owned by the County Highway Agency.