US Bridges

IH35 Nt/A @ FM3406 over IH 35 Ml

Fair

Williamson County, Texas · 1.4 MI N of US 79 · Structure no. 142460001509684

Built
2017
8 years old
Condition
Fair
inspected March 2023
Type
Box Beam or Girders - Multiple
Concrete
Length
252 ft
2 main spans
Daily traffic
84,030
2013 count
Owner
State
State Highway Agency

About this bridge

IH35 Nt/A @ FM3406 over IH 35 Ml is a concrete box beam or girders - multiple carrying IH35 Nt/A @ FM3406 over IH 35 Ml in Williamson County, Texas. It was built in 2017, so it is 8 years old, younger than the Texas average of 44.4 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 84,030 vehicles a day, roughly 17% of them trucks, projected to reach 282,100 by 2039. The structure is 252 ft (76.8 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIH35 Nt/A @ FM3406
CrossesIH 35 Ml
Location1.4 MI N of US 79
RouteState Highway 35
CountyWilliamson County
StateTexas
Coordinates30.53563, -97.69215
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length252 ft (76.8 m)
Longest span126 ft (38.4 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic84,030 (2013)
Projected traffic282,100 by 2039
Trucks17%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH35 Nt/A @ FM3406 over IH 35 Ml built?

It was built in 2017, making it 8 years old in 2025.

What condition is IH35 Nt/A @ FM3406 over IH 35 Ml 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 2023.

How much traffic does IH35 Nt/A @ FM3406 over IH 35 Ml carry?

About 84,030 vehicles per day (2013 count), of which roughly 17% are trucks.

How long is IH35 Nt/A @ FM3406 over IH 35 Ml?

The structure is 252 ft (76.8 m) long with a longest span of 126 ft (38.4 m) and a deck 30 ft wide.

Who owns IH35 Nt/A @ FM3406 over IH 35 Ml?

It is owned by the State Highway Agency.