US Bridges

Luitjens Lane over Fork of Blackhawk Creek

Good

Grundy County, Iowa · 088150501 · Structure no. 000000000606975

Built
1999
26 years old
Condition
Good
inspected April 2024
Type
Slab
Concrete Continuous
Length
72 ft
3 main spans
Daily traffic
27
2022 count
Owner
County
County Highway Agency

About this bridge

Luitjens Lane over Fork of Blackhawk Creek is a concrete continuous slab carrying Luitjens Lane over Fork of Blackhawk Creek in Grundy County, Iowa. It was built in 1999, so it is 26 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 27 vehicles a day, projected to reach 27 by 2044. The structure is 72 ft (21.9 m) long and 30 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesLuitjens Lane
CrossesFork of Blackhawk Creek
Location088150501
RouteCity Street 0
StateIowa
Coordinates42.45819, -92.63108
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48.6 US tons
Inventory rating36 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span28 ft (8.5 m)
Deck width30 ft (9 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2022)
Projected traffic27 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 Luitjens Lane over Fork of Blackhawk Creek built?

It was built in 1999, making it 26 years old in 2025.

What condition is Luitjens Lane over Fork of 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 2024.

How much traffic does Luitjens Lane over Fork of Blackhawk Creek carry?

About 27 vehicles per day (2022 count).

How long is Luitjens Lane over Fork of Blackhawk Creek?

The structure is 72 ft (21.9 m) long with a longest span of 28 ft (8.5 m) and a deck 30 ft wide.

Who owns Luitjens Lane over Fork of Blackhawk Creek?

It is owned by the County Highway Agency.