US Bridges

Ia 136 over Mineral Creek

Fair

Jones County, Iowa · 2.1 Mi. N of N JCT SR E29 · Structure no. 000000000032540

Built
1955
70 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
710
2022 count
Owner
State
State Highway Agency

About this bridge

Ia 136 over Mineral Creek is a concrete continuous slab carrying Ia 136 over Mineral Creek in Jones County, Iowa. It was built in 1955, so it is 70 years old, older 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 710 vehicles a day, roughly 21% of them trucks, projected to reach 710 by 2044. The structure is 127 ft (38.7 m) long and 33 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

Open in Google Maps
CarriesIa 136
CrossesMineral Creek
Location2.1 Mi. N of N JCT SR E29
RouteState Highway 136
CountyJones County
StateIowa
Coordinates42.1395, -91.01421
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 inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.9 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length127 ft (38.7 m)
Longest span48 ft (14.6 m)
Deck width33 ft (10 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic710 (2022)
Projected traffic710 by 2044
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 Mineral Creek built?

It was built in 1955, making it 70 years old in 2025.

What condition is Ia 136 over Mineral 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 November 2024.

How much traffic does Ia 136 over Mineral Creek carry?

About 710 vehicles per day (2022 count), of which roughly 21% are trucks.

How long is Ia 136 over Mineral Creek?

The structure is 127 ft (38.7 m) long with a longest span of 48 ft (14.6 m) and a deck 33 ft wide.

Who owns Ia 136 over Mineral Creek?

It is owned by the State Highway Agency.