US Bridges

X Ave over Branch Blackhawk Creek

Good

Grundy County, Iowa · 087150202 · Structure no. 000000000163902

Built
2018
7 years old
Condition
Good
inspected April 2022
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
26
2022 count
Owner
County
County Highway Agency

About this bridge

X Ave over Branch Blackhawk Creek is a prestressed concrete tee beam carrying X Ave over Branch Blackhawk Creek in Grundy County, Iowa. It was built in 2018, so it is 7 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 26 vehicles a day, projected to reach 26 by 2043. The structure is 51 ft (15.5 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesX Ave
CrossesBranch Blackhawk Creek
Location087150202
RouteCounty Highway 0
CountyGrundy County
StateIowa
Coordinates42.38185, -92.57279
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 protection7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating46.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width31 ft (9.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26 (2022)
Projected traffic26 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesOther
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was X Ave over Branch Blackhawk Creek built?

It was built in 2018, making it 7 years old in 2025.

What condition is X Ave over Branch Blackhawk 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 April 2022.

How much traffic does X Ave over Branch Blackhawk Creek carry?

About 26 vehicles per day (2022 count).

How long is X Ave over Branch Blackhawk Creek?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 31 ft wide.

Who owns X Ave over Branch Blackhawk Creek?

It is owned by the County Highway Agency.