US Bridges

SH 174 NB over Mk & T RR

Fair

Johnson County, Texas · 0.2 MI W of IH 35W · Structure no. 021270001901044

Built
1995
30 years old
Condition
Fair
inspected October 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
507 ft
3 main spans
Daily traffic
19,825
2024 count
Owner
State
State Highway Agency

About this bridge

SH 174 NB over Mk & T RR is a prestressed concrete stringer/multi-beam or girder carrying SH 174 NB over Mk & T RR in Johnson County, Texas. It was built in 1995, so it is 30 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 19,825 vehicles a day, roughly 8% of them trucks, projected to reach 21,540 by 2033. The structure is 507 ft (154.5 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSH 174 NB
CrossesMk & T RR
Location0.2 MI W of IH 35W
RouteState Highway 174
CountyJohnson County
StateTexas
Coordinates32.55056, -97.32141
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3 (+2 approach)
Design loadHS 20
Structure length507 ft (154.5 m)
Longest span124 ft (37.8 m)
Deck width55 ft (16.8 m)
Roadway width50 ft (15.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic19,825 (2024)
Projected traffic21,540 by 2033
Trucks8%
Lanes on structure3
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SH 174 NB over Mk & T RR built?

It was built in 1995, making it 30 years old in 2025.

What condition is SH 174 NB over Mk & T RR 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 2022.

How much traffic does SH 174 NB over Mk & T RR carry?

About 19,825 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SH 174 NB over Mk & T RR?

The structure is 507 ft (154.5 m) long with a longest span of 124 ft (37.8 m) and a deck 55 ft wide.

Who owns SH 174 NB over Mk & T RR?

It is owned by the State Highway Agency.