US Bridges

760 140th ST over Branch Boone Rvr Dd 159

Good

Hancock County, Iowa · 094251701 · Structure no. 000000000172801

Built
1985
40 years old
Condition
Good
inspected April 2023
Type
Slab
Concrete Continuous
Length
77 ft
3 main spans
Daily traffic
15
2022 count
Owner
County
County Highway Agency

About this bridge

760 140th ST over Branch Boone Rvr Dd 159 is a concrete continuous slab carrying 760 140th ST over Branch Boone Rvr Dd 159 in Hancock County, Iowa. It was built in 1985, so it is 40 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 15 vehicles a day, projected to reach 15 by 2043. The structure is 77 ft (23.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries760 140th ST
CrossesBranch Boone Rvr Dd 159
Location094251701
RouteCounty Highway 0
CountyHancock County
StateIowa
Coordinates42.96693, -93.82023
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 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating40.8 US tons
Inventory rating24.4 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length77 ft (23.5 m)
Longest span29 ft (8.8 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15 (2022)
Projected traffic15 by 2043
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$30,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was 760 140th ST over Branch Boone Rvr Dd 159 built?

It was built in 1985, making it 40 years old in 2025.

What condition is 760 140th ST over Branch Boone Rvr Dd 159 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 2023.

How much traffic does 760 140th ST over Branch Boone Rvr Dd 159 carry?

About 15 vehicles per day (2022 count).

How long is 760 140th ST over Branch Boone Rvr Dd 159?

The structure is 77 ft (23.5 m) long with a longest span of 29 ft (8.8 m) and a deck 26 ft wide.

Who owns 760 140th ST over Branch Boone Rvr Dd 159?

It is owned by the County Highway Agency.