US Bridges

FAP 412 US 51(NB) over US 136

Fair

McLean County, Illinois · 0.5 MI W of Old 51 · Structure no. 057019900000000

Built
1986
39 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
174 ft
1 main span
Daily traffic
9,650
2023 count
Owner
State
State Highway Agency

About this bridge

FAP 412 US 51(NB) over US 136 is a steel stringer/multi-beam or girder carrying FAP 412 US 51(NB) over US 136 in McLean County, Illinois. It was built in 1986, so it is 39 years old, younger than the Illinois average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 9,650 vehicles a day, roughly 18% of them trucks, projected to reach 4,570 by 2046. The structure is 174 ft (52.9 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesFAP 412 US 51(NB)
CrossesUS 136
Location0.5 MI W of Old 51
RouteU.S. Route 51
CountyMcLean County
StateIllinois
Coordinates40.31186, -88.98961
Functional classUrban Principal Arterial - Other Freeway or Expressway

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.8 US tons
Inventory rating40 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length174 ft (52.9 m)
Longest span125 ft (38 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,650 (2023)
Projected traffic4,570 by 2046
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 FAP 412 US 51(NB) over US 136 built?

It was built in 1986, making it 39 years old in 2025.

What condition is FAP 412 US 51(NB) over US 136 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 March 2024.

How much traffic does FAP 412 US 51(NB) over US 136 carry?

About 9,650 vehicles per day (2023 count), of which roughly 18% are trucks.

How long is FAP 412 US 51(NB) over US 136?

The structure is 174 ft (52.9 m) long with a longest span of 125 ft (38 m) and a deck 43 ft wide.

Who owns FAP 412 US 51(NB) over US 136?

It is owned by the State Highway Agency.