diff --git a/bridges/relays/lib-substrate-relay/src/cli/bridge.rs b/bridges/relays/lib-substrate-relay/src/cli/bridge.rs
index 316f59a2b0c8..5631285b3c54 100644
--- a/bridges/relays/lib-substrate-relay/src/cli/bridge.rs
+++ b/bridges/relays/lib-substrate-relay/src/cli/bridge.rs
@@ -19,7 +19,7 @@
 use crate::{
 	equivocation::SubstrateEquivocationDetectionPipeline,
 	finality::SubstrateFinalitySyncPipeline,
-	messages_lane::{MessagesRelayLimits, SubstrateMessageLane},
+	messages::{MessagesRelayLimits, SubstrateMessageLane},
 	parachains::SubstrateParachainsPipeline,
 };
 use pallet_bridge_parachains::{RelayBlockHash, RelayBlockHasher, RelayBlockNumber};
diff --git a/bridges/relays/lib-substrate-relay/src/cli/relay_headers_and_messages/mod.rs b/bridges/relays/lib-substrate-relay/src/cli/relay_headers_and_messages/mod.rs
index 05a061c2ea60..338dda3c6330 100644
--- a/bridges/relays/lib-substrate-relay/src/cli/relay_headers_and_messages/mod.rs
+++ b/bridges/relays/lib-substrate-relay/src/cli/relay_headers_and_messages/mod.rs
@@ -38,7 +38,7 @@ use futures::{FutureExt, TryFutureExt};
 
 use crate::{
 	cli::{bridge::MessagesCliBridge, DefaultClient, HexLaneId, PrometheusParams},
-	messages_lane::{MessagesRelayLimits, MessagesRelayParams},
+	messages::{MessagesRelayLimits, MessagesRelayParams},
 	on_demand::OnDemandRelay,
 	HeadersToRelay, TaggedAccount, TransactionParams,
 };
@@ -298,14 +298,14 @@ where
 			.collect::<Vec<_>>();
 		{
 			let common = self.mut_base().mut_common();
-			crate::messages_metrics::add_relay_balances_metrics::<_, Self::Right>(
+			crate::messages::metrics::add_relay_balances_metrics::<_, Self::Right>(
 				common.left.client.clone(),
 				&common.metrics_params,
 				&common.left.accounts,
 				&lanes,
 			)
 			.await?;
-			crate::messages_metrics::add_relay_balances_metrics::<_, Self::Left>(
+			crate::messages::metrics::add_relay_balances_metrics::<_, Self::Left>(
 				common.right.client.clone(),
 				&common.metrics_params,
 				&common.right.accounts,
@@ -318,7 +318,7 @@ where
 		let mut message_relays = Vec::with_capacity(lanes.len() * 2);
 		for lane in lanes {
 			let left_to_right_messages =
-				crate::messages_lane::run::<<Self::L2R as MessagesCliBridge>::MessagesLane, _, _>(
+				crate::messages::run::<<Self::L2R as MessagesCliBridge>::MessagesLane, _, _>(
 					self.left_to_right().messages_relay_params(
 						left_to_right_on_demand_headers.clone(),
 						right_to_left_on_demand_headers.clone(),
@@ -331,7 +331,7 @@ where
 			message_relays.push(left_to_right_messages);
 
 			let right_to_left_messages =
-				crate::messages_lane::run::<<Self::R2L as MessagesCliBridge>::MessagesLane, _, _>(
+				crate::messages::run::<<Self::R2L as MessagesCliBridge>::MessagesLane, _, _>(
 					self.right_to_left().messages_relay_params(
 						right_to_left_on_demand_headers.clone(),
 						left_to_right_on_demand_headers.clone(),
diff --git a/bridges/relays/lib-substrate-relay/src/cli/relay_messages.rs b/bridges/relays/lib-substrate-relay/src/cli/relay_messages.rs
index d0d9e2e48158..6c9fd22d8b2a 100644
--- a/bridges/relays/lib-substrate-relay/src/cli/relay_messages.rs
+++ b/bridges/relays/lib-substrate-relay/src/cli/relay_messages.rs
@@ -18,7 +18,7 @@
 
 use crate::{
 	cli::{bridge::*, chain_schema::*, HexLaneId, PrometheusParams},
-	messages_lane::MessagesRelayParams,
+	messages::MessagesRelayParams,
 	TransactionParams,
 };
 
@@ -66,7 +66,7 @@ where
 		let target_sign = data.target_sign.to_keypair::<Self::Target>()?;
 		let target_transactions_mortality = data.target_sign.transactions_mortality()?;
 
-		crate::messages_lane::run::<Self::MessagesLane, _, _>(MessagesRelayParams {
+		crate::messages::run::<Self::MessagesLane, _, _>(MessagesRelayParams {
 			source_client,
 			source_transaction_params: TransactionParams {
 				signer: source_sign,
diff --git a/bridges/relays/lib-substrate-relay/src/lib.rs b/bridges/relays/lib-substrate-relay/src/lib.rs
index b3e8e7ed9a20..002a58a66fe7 100644
--- a/bridges/relays/lib-substrate-relay/src/lib.rs
+++ b/bridges/relays/lib-substrate-relay/src/lib.rs
@@ -30,10 +30,7 @@ pub mod equivocation;
 pub mod error;
 pub mod finality;
 pub mod finality_base;
-pub mod messages_lane;
-pub mod messages_metrics;
-pub mod messages_source;
-pub mod messages_target;
+pub mod messages;
 pub mod on_demand;
 pub mod parachains;
 
diff --git a/bridges/relays/lib-substrate-relay/src/messages_metrics.rs b/bridges/relays/lib-substrate-relay/src/messages/metrics.rs
similarity index 100%
rename from bridges/relays/lib-substrate-relay/src/messages_metrics.rs
rename to bridges/relays/lib-substrate-relay/src/messages/metrics.rs
diff --git a/bridges/relays/lib-substrate-relay/src/messages_lane.rs b/bridges/relays/lib-substrate-relay/src/messages/mod.rs
similarity index 96%
rename from bridges/relays/lib-substrate-relay/src/messages_lane.rs
rename to bridges/relays/lib-substrate-relay/src/messages/mod.rs
index c6b56508f81d..0fbace0aa8f5 100644
--- a/bridges/relays/lib-substrate-relay/src/messages_lane.rs
+++ b/bridges/relays/lib-substrate-relay/src/messages/mod.rs
@@ -17,8 +17,10 @@
 //! Tools for supporting message lanes between two Substrate-based chains.
 
 use crate::{
-	messages_source::{SubstrateMessagesProof, SubstrateMessagesSource},
-	messages_target::{SubstrateMessagesDeliveryProof, SubstrateMessagesTarget},
+	messages::{
+		source::{SubstrateMessagesProof, SubstrateMessagesSource},
+		target::{SubstrateMessagesDeliveryProof, SubstrateMessagesTarget},
+	},
 	on_demand::OnDemandRelay,
 	BatchCallBuilder, BatchCallBuilderConstructor, TransactionParams,
 };
@@ -48,6 +50,10 @@ use sp_core::Pair;
 use sp_runtime::traits::Zero;
 use std::{fmt::Debug, marker::PhantomData};
 
+pub mod metrics;
+pub mod source;
+pub mod target;
+
 /// Substrate -> Substrate messages synchronization pipeline.
 pub trait SubstrateMessageLane: 'static + Clone + Debug + Send + Sync {
 	/// Messages of this chain are relayed to the `TargetChain`.
@@ -351,21 +357,21 @@ macro_rules! generate_receive_message_proof_call_builder {
 	($pipeline:ident, $mocked_builder:ident, $bridge_messages:path, $receive_messages_proof:path) => {
 		pub struct $mocked_builder;
 
-		impl $crate::messages_lane::ReceiveMessagesProofCallBuilder<$pipeline>
+		impl $crate::messages::ReceiveMessagesProofCallBuilder<$pipeline>
 			for $mocked_builder
 		{
 			fn build_receive_messages_proof_call(
 				relayer_id_at_source: relay_substrate_client::AccountIdOf<
-					<$pipeline as $crate::messages_lane::SubstrateMessageLane>::SourceChain
+					<$pipeline as $crate::messages::SubstrateMessageLane>::SourceChain
 				>,
-				proof: $crate::messages_source::SubstrateMessagesProof<
-					<$pipeline as $crate::messages_lane::SubstrateMessageLane>::SourceChain
+				proof: $crate::messages::source::SubstrateMessagesProof<
+					<$pipeline as $crate::messages::SubstrateMessageLane>::SourceChain
 				>,
 				messages_count: u32,
 				dispatch_weight: bp_messages::Weight,
 				_trace_call: bool,
 			) -> relay_substrate_client::CallOf<
-				<$pipeline as $crate::messages_lane::SubstrateMessageLane>::TargetChain
+				<$pipeline as $crate::messages::SubstrateMessageLane>::TargetChain
 			> {
 				bp_runtime::paste::item! {
 					$bridge_messages($receive_messages_proof {
@@ -447,16 +453,16 @@ macro_rules! generate_receive_message_delivery_proof_call_builder {
 	($pipeline:ident, $mocked_builder:ident, $bridge_messages:path, $receive_messages_delivery_proof:path) => {
 		pub struct $mocked_builder;
 
-		impl $crate::messages_lane::ReceiveMessagesDeliveryProofCallBuilder<$pipeline>
+		impl $crate::messages::ReceiveMessagesDeliveryProofCallBuilder<$pipeline>
 			for $mocked_builder
 		{
 			fn build_receive_messages_delivery_proof_call(
-				proof: $crate::messages_target::SubstrateMessagesDeliveryProof<
-					<$pipeline as $crate::messages_lane::SubstrateMessageLane>::TargetChain
+				proof: $crate::messages::target::SubstrateMessagesDeliveryProof<
+					<$pipeline as $crate::messages::SubstrateMessageLane>::TargetChain
 				>,
 				_trace_call: bool,
 			) -> relay_substrate_client::CallOf<
-				<$pipeline as $crate::messages_lane::SubstrateMessageLane>::SourceChain
+				<$pipeline as $crate::messages::SubstrateMessageLane>::SourceChain
 			> {
 				bp_runtime::paste::item! {
 					$bridge_messages($receive_messages_delivery_proof {
diff --git a/bridges/relays/lib-substrate-relay/src/messages_source.rs b/bridges/relays/lib-substrate-relay/src/messages/source.rs
similarity index 99%
rename from bridges/relays/lib-substrate-relay/src/messages_source.rs
rename to bridges/relays/lib-substrate-relay/src/messages/source.rs
index 8c2faf9fedaa..877b0438323e 100644
--- a/bridges/relays/lib-substrate-relay/src/messages_source.rs
+++ b/bridges/relays/lib-substrate-relay/src/messages/source.rs
@@ -20,7 +20,7 @@
 
 use crate::{
 	finality_base::best_synced_header_id,
-	messages_lane::{
+	messages::{
 		BatchProofTransaction, MessageLaneAdapter, ReceiveMessagesDeliveryProofCallBuilder,
 		SubstrateMessageLane,
 	},
diff --git a/bridges/relays/lib-substrate-relay/src/messages_target.rs b/bridges/relays/lib-substrate-relay/src/messages/target.rs
similarity index 98%
rename from bridges/relays/lib-substrate-relay/src/messages_target.rs
rename to bridges/relays/lib-substrate-relay/src/messages/target.rs
index b190df64c7e9..686f57e84d83 100644
--- a/bridges/relays/lib-substrate-relay/src/messages_target.rs
+++ b/bridges/relays/lib-substrate-relay/src/messages/target.rs
@@ -19,13 +19,14 @@
 //! `<BridgedName>` chain.
 
 use crate::{
-	messages_lane::{
+	messages::{
+		source::{
+			ensure_messages_pallet_active, read_client_state_from_both_chains,
+			SubstrateMessagesProof,
+		},
 		BatchProofTransaction, MessageLaneAdapter, ReceiveMessagesProofCallBuilder,
 		SubstrateMessageLane,
 	},
-	messages_source::{
-		ensure_messages_pallet_active, read_client_state_from_both_chains, SubstrateMessagesProof,
-	},
 	on_demand::OnDemandRelay,
 	TransactionParams,
 };
diff --git a/bridges/relays/lib-substrate-relay/src/on_demand/parachains.rs b/bridges/relays/lib-substrate-relay/src/on_demand/parachains.rs
index 654cb6628d5f..4579222a2c68 100644
--- a/bridges/relays/lib-substrate-relay/src/on_demand/parachains.rs
+++ b/bridges/relays/lib-substrate-relay/src/on_demand/parachains.rs
@@ -17,7 +17,7 @@
 //! On-demand Substrate -> Substrate parachain finality relay.
 
 use crate::{
-	messages_source::best_finalized_peer_header_at_self,
+	messages::source::best_finalized_peer_header_at_self,
 	on_demand::OnDemandRelay,
 	parachains::{
 		source::ParachainsSource, target::ParachainsTarget, ParachainsPipelineAdapter,
@@ -681,7 +681,7 @@ impl<'a, P: SubstrateParachainsPipeline, SourceRelayClnt, TargetClnt>
 	async fn best_finalized_relay_block_at_target(
 		&self,
 	) -> Result<HeaderIdOf<P::SourceRelayChain>, SubstrateError> {
-		Ok(crate::messages_source::read_client_state::<P::TargetChain, P::SourceRelayChain>(
+		Ok(crate::messages::source::read_client_state::<P::TargetChain, P::SourceRelayChain>(
 			&self.0.target_client,
 		)
 		.await?