US Bridges

Ia 136 over Deep Creek

Fair

Clinton County, Iowa · 0.2 Mi. N of W JCT SR Z2E · Structure no. 000000000021091

Built
1989
36 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
133 ft
3 main spans
Daily traffic
580
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 136 over Deep Creek is a concrete continuous slab carrying Ia 136 over Deep Creek in Clinton County, Iowa. It was built in 1989, so it is 36 years old, younger than the Iowa average of 45.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 580 vehicles a day, roughly 18% of them trucks, projected to reach 580 by 2044. The structure is 133 ft (40.5 m) long and 39 ft wide. If it were closed, the detour would be 26.1 mi (42 km).

Location

Open in Google Maps
CarriesIa 136
CrossesDeep Creek
Location0.2 Mi. N of W JCT SR Z2E
RouteState Highway 136
CountyClinton County
StateIowa
Coordinates41.96196, -90.47765
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating91.5 US tons
Inventory rating51.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span51 ft (15.5 m)
Deck width39 ft (12 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic580 (2022)
Projected traffic580 by 2044
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.1 mi (42 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 Ia 136 over Deep Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Ia 136 over Deep Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.

How much traffic does Ia 136 over Deep Creek carry?

About 580 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Ia 136 over Deep Creek?

The structure is 133 ft (40.5 m) long with a longest span of 51 ft (15.5 m) and a deck 39 ft wide.

Who owns Ia 136 over Deep Creek?

It is owned by the State Highway Agency.