US Bridges

125th St. over Elk River

Good

Clinton County, Iowa · 083E61701 · Structure no. 000000000125692

Built
2005
20 years old
Condition
Good
inspected March 2024
Type
Tee Beam
Prestressed Concrete
Length
51 ft
1 main span
Daily traffic
41
2022 count
Owner
County
County Highway Agency

About this bridge

125th St. over Elk River is a prestressed concrete tee beam carrying 125th St. over Elk River in Clinton County, Iowa. It was built in 2005, so it is 20 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 41 vehicles a day, projected to reach 41 by 2044. The structure is 51 ft (15.5 m) long and 28 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Carries125th St.
CrossesElk River
Location083E61701
RouteCounty Highway 0
StateIowa
Coordinates42.0045, -90.28197
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 inspectionMarch 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.5 US tons
Inventory rating37.4 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length51 ft (15.5 m)
Longest span50 ft (15.2 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41 (2022)
Projected traffic41 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 125th St. over Elk River built?

It was built in 2005, making it 20 years old in 2025.

What condition is 125th St. over Elk 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 March 2024.

How much traffic does 125th St. over Elk River carry?

About 41 vehicles per day (2022 count).

How long is 125th St. over Elk River?

The structure is 51 ft (15.5 m) long with a longest span of 50 ft (15.2 m) and a deck 28 ft wide.

Who owns 125th St. over Elk River?

It is owned by the County Highway Agency.