US Bridges

I 35W Nbml over N Chambers Creek

Fair

Johnson County, Texas · 2.5 MI S of US 67 · Structure no. 021270001404266

Built
1966
59 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
140 ft
1 main span
Daily traffic
21,969
2023 count
Owner
State
State Highway Agency

About this bridge

I 35W Nbml over N Chambers Creek is a prestressed concrete stringer/multi-beam or girder carrying I 35W Nbml over N Chambers Creek in Johnson County, Texas. It was built in 1966, so it is 59 years old, older 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 21,969 vehicles a day, roughly 27% of them trucks, projected to reach 28,980 by 2040. The structure is 140 ft (42.7 m) long and 41 ft wide.

CarriesI 35W Nbml
CrossesN Chambers Creek
Location2.5 MI S of US 67
RouteInterstate 35
StateTexas
Coordinates32.38542, -97.2072
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
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 rating75 US tons
Inventory rating39 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHS 20
Structure length140 ft (42.7 m)
Longest span60 ft (18.3 m)
Deck width41 ft (12.6 m)
Roadway width37 ft (11.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,969 (2023)
Projected traffic28,980 by 2040
Trucks27%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I 35W Nbml over N Chambers Creek built?

It was built in 1966, making it 59 years old in 2025.

What condition is I 35W Nbml over N Chambers 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 October 2024.

How much traffic does I 35W Nbml over N Chambers Creek carry?

About 21,969 vehicles per day (2023 count), of which roughly 27% are trucks.

How long is I 35W Nbml over N Chambers Creek?

The structure is 140 ft (42.7 m) long with a longest span of 60 ft (18.3 m) and a deck 41 ft wide.

Who owns I 35W Nbml over N Chambers Creek?

It is owned by the State Highway Agency.