US Bridges

U Ave over Montgomery Creek

Good

Boone County, Iowa · 085253302 · Structure no. 000000000078221

Built
2019
6 years old
Condition
Good
inspected May 2022
Type
Slab
Concrete
Length
53 ft
1 main span
Daily traffic
30
2022 count
Owner
County
County Highway Agency

About this bridge

U Ave over Montgomery Creek is a concrete slab carrying U Ave over Montgomery Creek in Boone County, Iowa. It was built in 2019, so it is 6 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 30 vehicles a day, projected to reach 30 by 2043. The structure is 53 ft (16.2 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesU Ave
CrossesMontgomery Creek
Location085253302
RouteCounty Highway 0
StateIowa
Coordinates42.13281, -93.77631
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMay 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length53 ft (16.2 m)
Longest span50 ft (15.2 m)
Deck width33 ft (10 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic30 (2022)
Projected traffic30 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 U Ave over Montgomery Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is U Ave over Montgomery Creek 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 May 2022.

How much traffic does U Ave over Montgomery Creek carry?

About 30 vehicles per day (2022 count).

How long is U Ave over Montgomery Creek?

The structure is 53 ft (16.2 m) long with a longest span of 50 ft (15.2 m) and a deck 33 ft wide.

Who owns U Ave over Montgomery Creek?

It is owned by the County Highway Agency.